I had this problem with my PSR2000. I didn't use my PSR3000 enough to know if it fell out, but will agree that sure is one damn ugly toylike piece of _____.
What I did use was some stuff you can get at Home Depot or even WalMart. I think it's called Sticky Tak or something like that. It's kind of a gummy material that you can use to post things on the wall like posters or whatever. I've seen it in blue and in yellow.
I can't take credit for the idea. Someone from England on the Yamaha psr styles forum
on yahoo told me about it a few years ago. It worked.
Scott Langholff http://ScottLMusic.com