John, I am not an electrical guru but I would suspect the neck control switch is bad or maybe got a bit of solder dropped into it when the pickup change took place. Since the E9 pickup works fine straight thru and the C6 works good switched either way it seems to narrow down to the contacts in the switch that connects the E9 pickup in the center position. I think when the control is completely on treble clockwise all the signal is sent straight thru and not thru the condenser into the ground so it is probably a problem on th lug that the condenser is connected to. It's time for Jay Ganz or Ken Fox to come to the rescue.
Jerry[This message was edited by Jerry Roller on 24 November 2003 at 07:29 PM.]