Conn 632 - noisy keying on Great.

[jpviscount]

Same 632 with the missing G6 ... All the keys on the Swell for both flute and other voices play perfectly (except the G6, of course). On the Great, the flutes play perfectly, but the keying for the other voices is very scratchy. Thought I read somewhere that each voice section has a separate, adjustable keying voltage. Wondering if that is the case and how to adjust it.