I've a CS01 and when bought I was told there were some issues - no res and sliders for several parameters that didn't go all the way. However I opened it up and seemed to solve the res issue by turning up the trimpot (though the owner swears he'd not touched it), and frankly now it's pretty nasty! However:
While several of the sliders don't go all the way with the case on, without it they are happy to slide all the way. It seems with the case on the slider covers hit the case preventing full travel. I don't get it - pots are fine, case is fine, but together....strange. No bends, no bashing, CS is in good condition.
Does the VCA EG depth slider just act as another volume control? I.e. Not as an adjustment between gate and Env like on other synths or should it work like that, varying the amount of envelope on VCA? Just seems a waste otherwise and limits the synth a little.