Akai AX-60 modifictaions

[CRAIG_BEISEL at NON-HP-Boise-om8.om.hp.com]

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     I want mod my AX-60 to incorporate a glide pot.  I opened the case 
     recently and could decipher very little from looking at the guts.  I 
     can't even tell where the digital stops and where the analogue begins!
     I know how to build the glide circuit, but I am not sure where to find 
     the control voltage input to the VCO is (if it exists at all)...
     
     If anyone out there has done anything similar, or has a schematic that 
     might be helpful, it would be most appreciated on this end.  Any other 
     mods to this questionable synth are also more than welcome.  Thanks!
     
     -Craig Beisel