Mysterious after ring

[CCLPianos@AOL.COM]

List,
	The piano Chickering console, aprox 44" 1930's. Nice piano, well cared for
and has been used at least twice. Hasn't had a damper problem until recently.
Now all of a sudden the Dampers will not seat on the strings, in spite of
having exceptionally good springs, adequate lost motion in the pedal rods,
adequate lost motion in the whip/capstan, adequate lost motion with the damper
spoon, etc. With the pedal rods out, and the action frame snagged tight, I
still get after ring. It's annoying, so it must be repaired/regulated. 
	Before I go tearing it apart and resetting the damper action are there any
words of wisdom concerning such matters?
Patrick Wethington