Yamaha CS80

Hi all.

I'm finishing up fixing an ill 4VS.  I've got it pretty much working and 
added CV/Gate inputs to SEM 1-3.  The last thing I need to do it clean 
some of the keyboard contacts.  How the hell do you get the keyboard 
assembly out and get to the contacts?????   I feel kind-of dumb, but 
there's got to be an easier way that disassembling the who thing!

Thanks much,

  David