Flyout Navigation component & TableView question

I'm using a custom version of the Flyout Navigation component. We need more freedom on how the table cells look in the menu. Instead of adding a RootElement with Sections and child Elements, I'm trying to apply a UITableView. I can't figure out how to accomplish this without losing the .OnSelection() event that fires in the FlyoutNavigationController.

The main content of this controller is a DialogViewController. If I add a custom UITableView to the Root.TableView, it doesn't render at all. If I add the UITableView to the TableView property it shows, but the .OnSelection() event isn't firing.

Can someone point me in the right direction here?