Yes i have dampened my buttons. I assume that you have the same kind of generics as mine and not sanwa. I felt that the button had too much room for movement but also was not touching the bottom (the black part) when press so the button was not stable during the hold notes. All the weight was on the switch. To fix that, I added some foam stickers that you can find in home supplies stores. I sticked 4 of those under each plunger. Now the plunger with the foam moves just enough to activate the switch and makes stable contact with the black part underneath. I don't remerber what thickness i used, the best is to buy different types and try. Also, consider buying the 200g sanwa springs, it makes a HUGE difference. I hope it is understadable. I don't have picture to show you right now.