Hi Stuart,
If you have not found a way to hide the edge of the last yellow ball, then try setting the EuroRw.overflow = hidden property, which hides all elements that fall outside the parent container (EuroRw).
I tried my way of hiding items using the cover, but on Android it does not work.
Your application seems simple, but after some attempts I realized that it would take a lot of effort to make it beautifully working on Android.
Regards, Alex