Custom Templates and Infinite Scrolling

I am on SW v3.0.0.1159 and have `infinite scrolling' now on the pages. This does funny things with custom templates. Has anyone else played with this at all?

I am trying to figure out how to get the custom templates to fold/loop/repeat when extending the margins on pages past the nominal screen size. This does not happen on the device, and it exports in strange ways also.

If you have worked with custom templates on v3 I am interested in hearing how it works for you.