Vintage Synth Repair

I have a CS80 with a broken Ribbon controller.   the spring inside of the controller has broken in multiple places,  anybody have one laying around they'd sell?   or know of a way to repair them?  I'd like to get this synth back to 100%  and aside from a few aftertouch problems and the ribbon controller I'm there.  

speaking of the aftertouch problems... I have a few clusters of keys where the aftertouch isn't functioning.  

I've rebuilt the TKC and TSB boards,   but no luck.  
anyone familiar with the CS80?
-steve