Thanks Ian , please be sure to do that !! LOL

Donny ,
I had a chance to try 2 / S900`s last fall and on both the rubber buttons would stick against the silver plastic casing of the KB itself. ( the smaller buttons )
Maybe it was because it was a first run batch.
I have had plenty of Yamaha KB`s in the past and they ALL have had rubber buttons with NO problems at all.
The only non rubber button A/KB I owned was the Y2K and a Casio CT-701 .
Take care,

Gary