psr2k owners know that in a hurry, it's very easy to hit the "Transpose" when reaching for the "Tempo" buttons. They should be further apart .... a nightmare waiting to happen.
I put a small stick-on clear, rubber foot right in the center of the two tempo buttons so that I can FEEL the correct one....great for those quick changes in the dark.
The little feet come 12(I think) in a pack at Radio Shack for about $2.00.
Could be a lifesaver one day.