I am in the process of creating a data driven multi step form, which returns the same view(template) each time the "Next/Previous" buttons are clicked.

However, when clicking "Next" (submit) I get the following:

Here is the main view (template) that will always be returned each time "next/previous" is clicked. (see below)

  @inherits Umbraco.Web.Mvc.UmbracoViewPage<SchemeWizardStepsViewModel>
@using QuoteBeater.ViewModels;

@{
    Layout = "quoteBeater.cshtml";
} 
<section>
        <div class="container">
            <h1>@Model.Scheme.SchemeName</h1>

            <div class="wizard-steps">
                @foreach (var wizardStep in Model.Steps.OrderBy(x => x.WizardStep))
                {
                    if (wizardStep.WizardStep == Model.CurrentWizardStep)
                    {
                        <span class="wizard-step active">@wizardStep.GroupName</span>
                    }
                    else
                    {
                        <span class="wizard-step">@wizardStep.GroupName</span>
                    }
                }
            </div>

            @for (int i = 0; i < Model.Steps.OrderBy(x => x.WizardStep).ToList().Count; i++)
            {
                if (Model.Steps[i].WizardStep == Model.CurrentWizardStep)
                {
                    WizardStepViewModel wizardStepViewModel = Model.Steps[i];
                    @Html.EditorFor(model => wizardStepViewModel, "WizardStepEditor", new { id = "wizStepID" + Model.Steps[i].WizardStep.ToString() })
                    break;
                }
            }

        </div>
    </section>

Here is the view with "beginUmbracoForm" and the questions (used with Html.EditorFor)

@model WizardStepViewModel
@using QuoteBeater.ViewModels;
@using QuoteBeater.Website.Models;
@using QuoteBeater.Controllers;
@using System.ComponentModel;
@using System.Linq;


@using (Html.BeginUmbracoForm("HandleWizardStepAction", "QuoteForm"))
{
    @Html.HiddenFor(x => x.GroupId, new { @id = "GroupID" })
    @Html.HiddenFor(x => x.GroupName)
    @Html.HiddenFor(x => x.IsValidStep)
    @Html.HiddenFor(x => x.WizardStep)
    @Html.HiddenFor(x => x.FinalWizardStep)


    @Html.AntiForgeryToken()
    @Html.ValidationSummary()

    <h3>@Model.GroupName</h3>

    for (int i = 0; i < Model.Questions.Count; i++)
    {
        //Questions Render Here
    }

    <div class="text-left">
        @if (Model.WizardStep > 1)
        {
            <input type="submit" id="previousSubmit" name="submitButton" class="btn btn-primary btn-lg" value="Previous" formnovalidate />
        }
        @if (Model.WizardStep == Model.FinalWizardStep)
        {
            <input type="submit" name="submitButton" class="btn btn-success btn-lg" value="Finish" />
        }
        else
        {
            <input type="submit" id="nextSubmit" name="submitButton" class="btn btn-primary btn-lg" value="Next" />
        }
    </div>

Here is my model

public class SchemeWizardStepsViewModel : PublishedContentWrapped
    {

        public SchemeWizardStepsViewModel(IPublishedContent content) : base(content) { }

        public Scheme Scheme { get; set; }
        public int NumberOfWizardSteps { get; set; }
        public int CurrentWizardStep { get; set; }
        public List<WizardStepViewModel> Steps { get; set; }


        public void PersistAnswers(int currentWizardStep, WizardStepViewModel currentWizardStepViewModel)
        {
            for (int i = 0; i < Steps.Count; i++)
            {
                if (Steps[i].WizardStep == currentWizardStep)
                {
                    List<QuestionViewModel> questions = Steps[i].Questions;

                    for (int j = 0; j < questions.Count; j++)
                    {

                        //check for nulls
                        if (questions[j] != null)
                        {
                            var answer = currentWizardStepViewModel.Questions.FirstOrDefault(f => f.Question.ID == questions[j].Question.ID).Answer;

                            if (answer != null)
                            {

                                questions[j].Answer.AnswerValue = answer.AnswerValue;
                            }

                        }
                    }
                }
            }


        }
    }

Here is my Controller

namespace QuoteBeater.Controllers
{
    public class QuoteFormController : RenderMvcController
    {

        public static LogicInstance instance = _Code.SiteSingleton.LogicInstance_ServiceSingleton.Instance;
        public static TeledynamicsWebsiteContext context = instance.GetWebsiteContext(ConfigurationManager.ConnectionStrings["teledynamicsWebsiteDBContext"].ToString());


        public static ContentModel contentModel { get; set; }

        public QuoteFormController() { }

        public override ActionResult Index(ContentModel model)
        {

            contentModel = model;
            string schemeType = "Private";

            ModelState.Clear();

            Scheme scheme = context.Schemes_GetAll().FirstOrDefault(x => x.SchemeName.ToLower().Contains(schemeType.ToLower()));
            List<SchemeGroup> schemeGroups = context.Schemes_GetSchemeGroups(scheme.ID);
            List<Question> schemeQuestions = context.Schemes_GetSchemeQuestions(scheme.ID);

            foreach (var item in schemeGroups.OrderBy(o => o.Group.ID))
            {
                List<QuestionViewModel> questionViewModels = new List<QuestionViewModel>();
                List<Question> groupQuestions = schemeQuestions.Where(f => f.Group.ID == item.Group.ID).ToList();

                for (int i = 0; i < groupQuestions.Count; i++)
                {
                    questionViewModels.Add(new QuestionViewModel(contentModel.Content) { Question = groupQuestions[i], Answer = new AnswerViewModel(contentModel.Content) { QuestionID = groupQuestions[i].ID } });
                }

                WizardStepViewModel wizardStepViewModel = new WizardStepViewModel(contentModel.Content)
                {
                    GroupId = item.Group.ID,
                    GroupName = item.Group.GroupName,
                    Questions = questionViewModels,
                    WizardStep = wizardStep,
                    FinalWizardStep = schemeGroups.Count
                };

                foreach (var questionViewModel in wizardStepViewModel.Questions)
                {

                }

                schemeSteps.Add(wizardStepViewModel);
                wizardStep++;
            }

            schemeWizardStepsViewModel.Scheme = scheme;
            schemeWizardStepsViewModel.CurrentWizardStep = 1;
            schemeWizardStepsViewModel.Steps = schemeSteps;

            //Persist data here...
            Session["CurrentWizardStep"] = schemeWizardStepsViewModel.CurrentWizardStep;
            Session["SchemeWizardStepViewModel"] = schemeWizardStepsViewModel;

            return View("~/Views/quoteForm.cshtml", schemeWizardStepsViewModel);

        }


        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult HandleWizardStepAction(WizardStepViewModel wizardStepViewModel, string submitButton)
        {
            //http://www.binaryintellect.net/articles/c69d78a3-21d7-416b-9d10-6b812a862778.aspx
            //https://stackoverflow.com/questions/442704/how-do-you-handle-multiple-submit-buttons-in-asp-net-mvc-framework
            switch (submitButton)
            {
                case "Next":
                    return (MoveToNextWizardStep(wizardStepViewModel));
                case "Previous":
                    return (MoveToPreviousWizardStep(wizardStepViewModel));
                case "Finish":
                    return (FinishWizard(wizardStepViewModel));
                default:
                    // If they've submitted the form without a submitButton, 
                    // just return the view again.
                    return (View());
            }
        }


        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult MoveToNextWizardStep(WizardStepViewModel wizardStepViewModel)
        {
            SchemeWizardStepsViewModel schemeWizardStepsViewModel = (SchemeWizardStepsViewModel)Session["SchemeWizardStepViewModel"];
            return View("~/Views/quoteForm.cshtml", schemeWizardStepsViewModel);
        }


        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult MoveToPreviousWizardStep(WizardStepViewModel wizardStepViewModel)
        {
            ModelState.Clear();
            SchemeWizardStepsViewModel schemeWizardStepsViewModel = (SchemeWizardStepsViewModel)Session["SchemeWizardStepViewModel"];
            return View("~/Views/quoteForm.cshtml", schemeWizardStepsViewModel);
        }


        [HttpPost]
        public ActionResult FinishWizard(WizardStepViewModel wizardStepViewModel)
        {
            return  View("~/Views/quoteForm.cshtml");
        }

    }
}

I am not inheriting from "surfacecontroller" and instead using "rendermvccontroller" due to if i used surface, I always faced errors about not being able to bind the models builder model to my custom model.

Can anyone suggest where I am going wrong?