Hi Group, Jerry F. Bacon asked about weak Pedal Solenoids.  
I have two suggestions.  Check out Mark Fontana's Pianocorder web 
site at http://dp70.dyndns.org/pianocorder/ for Pianocorder resources,
and links.

Secondly, I have a copy of Carl Meyer's three page sheet that tells 
how to modify the Pianocorder playback board to improve sustain pedal
function.  If you send an email with your postal address I will send 
a copy of it to you.

Jack M. Conway, Los Angeles, California, USA