Yam psr2000, "D" fill button, I push it while playing like I always have but unless I _really_ concentrate and carefully push the button (which is very hard if I'm sailing along pretty busily), it doesn't activate.

This is in addition to the aforementioned problem (a thread awhile back) of a couple of note keys "G" and "A" just below the "B" and "C" fill buttons... they kind of have a sticky thing going on. When I hit those notes, the keys stick a microsecond like they have glue on them.

So, I am wondering if these problems are related. I haven't spilled anything on the board.