Hey. So, honestly, I think this might constitute a bug. I might consider submitting a report for it - my player sticks to the spinning platform and almost always gets pushed back on top without falling off. It's bizarre.
I made a work around for you and added some comments. I hope its helpful at this point.
https://www.dropbox.com/s/qkf02ii5po5rp ... .capx?dl=0
EDIT: Oh I just noticed it's your birthday. Happy birthday!
It does work somewhat, but not exactly what I want. I see what you were going for, though, and it can work if I tweak it a bit for my needs. Jeffige was telling me about Physics so I might go that route, but I'll just have to see.