I couldn't figure it out, Floaded. I tried changing the vel. res. I moved, raised and lowered my stool, I checked my fingering and my distance from the stool to the piano. I compared the feel of the Yamahas to Rolands and Korgs as to key resistance and the difference seemed negligable. I tried everything. The Yamahas just cause me finger pain. The ones that I have had did have semi-weighted keys as opposed to the synth action Rolands and Korgs, but as I said, the level of resistance seemed almost the same. I have owned Rolands, Korgs, Nords, Yamahas and Casios of every stripe, but the only ones that cause me to have finger pain are the Yamahas. It wasn't a problem in the past as I always had two or three boards of different kinds and I switched off between them. The XS hurt my fingers some, but not enough to be a major problem. I decided to go all Yamaha and bought the MOX 6. It was exactly what I needed. A light Motif XS. And I was workimg with the same os all the time. But the pain started and radiated all the way up into my arms. I tried to play it out, but was unsuccessful. I let the MOX6 go and got a Roland Juno gi. Finger pain gone. I don't have a clue as to why.