"Sticking Keys"

[Andrew and Rebeca Anderson]

I had a chinese piano come in, a little upright with a few problems:

	bass strings buzzing, removed loose keypins from bridge: still buzzing
	rerouted bass string through its own bridge pins: fixed

	occasional key sticking hard to reproduce: figured out how to 
reproduce predictably
	try rapid cycling of key without fully lifting up, allows check to 
loosen and hammer to fall back without jack going under then 
jack 	catches on buckskin just back of felt cushion and the only 
effective release is the lost motion inducer (soft) pedal
Solutions?

Andrew