lukitoh,
Larry hit the nail on the head. All keyboard experience this problem over time. This is especially trye when the keys are hammered too hard by folks who previously enjoyed playing the piano. The pad is easy to replace, but if you have little or no electro/mechanical experience take it to the repair shop.
Good Luck,
Gary
------------------
Travlin' Easy
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)