<html> <body> Hi Marc,                Simple answer is yes.   If you are unskilled at working  on grand dampers, I would suggest you get a mentor to help you with some hands on training.   I have run across far too many badly done damper jobs to give a short description via email. Regards Roger At 02:18 PM 5/16/2006, you wrote: <blockquote type=cite class=cite cite=""> Hi,   The damper in the G5 region of a Young Chang model GS-150 small grand piano gets stuck open if you hit the key pretty hard (it must be pushed back down by hand). A medium hit on the key seems to jam the hammer for 1 second but it returns to the down position. Even if I hit the key lightly I observed some binging of the damper before it returned to the down position.   What could be the problem, does the action have to be taken out of the piano for repair?   Thanks,   Marc</blockquote></body> </html>