Disklavier

I found out that the pistons are part of the 'old style' hammer rest 
design...perhaps there to ensure the optical DSK sensors don't sense 
a double strike.  I can remove all 88 pistons - no problem.  But 
then, how can I go about designing and installing the proper sized 
hammer rest rail (and what are the materials I should use)?

-Kevin

--- In disklavier@yahoogroups.com, "pasta_man_10" 
<kevin.culcasi@i...> wrote:
> Hello,
> I recently bought a Japanese import ('93 HQ300 model, like the U3 
> with a disklavier), but I don't have the manual.
> 
> The Disklavier playback/record functionality is pretty intuitive 
> (mine has Japanese characters instead of English text beside the 
> buttons), but I can't quite figure out the headphone jack and midi 
> in/out features beneath the keyboard (there's also a switch by the 
> midi jacks)...
> 
> My piano has the second pedal with the silent feature (push down, 
> lock left), but, am I supposed to be able to hear tones from 
> headphones connected to the 1/4" headphone jack?
> 
> Also, I have a question about the hammer returns.  When a key is 
> pressed, the hammer returns to a plastic piece that looks a bit 
like 
> a piston -- it appears the piston retracts, then returns to soften 
> the hammer's return.  Well, when the hammer initially hits the 
> plastic piston, there's an annoying 'click' sound -- occurs with 
all 
> 88 keys... even if the keys are slightly pressed (hammer doesn't 
> have to hit the strings).  So I can barely touch each of the keys 
> and here a clicking sound without actually playing the 
> piano...sounds like a quiet old-style typewriter!  My question:  
is 
> there a way to replace this style of hammer return with the style 
> used on new U1/U3 models today?  I recently visited a Yamaha store 
> and found that newer models have replaced the plastic pistons with 
a 
> long piece of felt for the hammers to hit upon return.  Can anyone 
> provide me with some help?  This clicking sound is driving me 
> nuts....  Thanks.  -kevin