Bergman upright action problems

[Piannaman@aol.com]

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Some pianos should just never be made....
 
I think these are made in the Chinese Young Chang plant.  They look  
suspiciously like those little 107 jobbers that break jack springs from time to  time.
 
First ("free") tuning presented a plethora of problems(Am I almost as  
allitertive as Alan:-).  The hammers were a good half inch off the rail,  keys were 
tight, yada, yada, yada....
 
The REAL problem was that the keyboard is so poorly weighted that there  is 
so much downweight in the black keys at either end of the  keyboard that the 
action weight and springs can't hoist them back into  position, with damper 
pedal on or off.
 
I didn't take readings, but I could feel huge weight differences from  one 
key to the next.  After everything was regulated as well as  possible, keys 
eased, keypins lubed, the jacks still could not force their  way back under the 
butts, despite a healthy dose of teflon powder...
 
I stretched the jack springs to increase tension, though if  I had time I'd 
have replaced them with stronger ones.  This seemed to get  the thing to 
function.
 
Short of pulling leads out of the fronts of the keys, any other ideas  
helping this action?
 
Thanks,
 
Dave S.

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