Crumar Musical Instruments User Group.

hallo,
i recently bought a crumar trilogy . like the very electric sound of it 
.
i have to repair one small problem still (sustain of the adsr's 
doesn't seem to work properly) and also like to do some 
modifications. a scheme would therefor be very handy. so far 
however i wasn't able to find one . who might give me some help 
with this search or maybe has  a scheme him/her self?
thanks, sunny