I'm glad you fixed it.
Now, concerning the general velocity problem with your keyboard, you should check the velocity contacts closely.
I've just posted a photo showing the wire that might break on the contact strip:
http://groups.yahoo.com/neo/groups/yamahacs80/photos/albums/98520315
On my unit, a few were broken a few millimeters away from the hole (probably due to the rubbing with the upper strip when pressing down and up on a key to get the aftertouch). One was particularly lifted, so the contact with the upper strip occurred sooner which resulted in higher velocities than expected.
Now, concerning the general velocity problem with your keyboard, you should check the velocity contacts closely.
I've just posted a photo showing the wire that might break on the contact strip:
http://groups.yahoo.com/neo/groups/yamahacs80/photos/albums/98520315
On my unit, a few were broken a few millimeters away from the hole (probably due to the rubbing with the upper strip when pressing down and up on a key to get the aftertouch). One was particularly lifted, so the contact with the upper strip occurred sooner which resulted in higher velocities than expected.