Just happened upon a vintage Crown IC 150A pre in my friends basement. Thing sounds great, but I couldn't stand having a balance pot in the signal flow so I cut the thing out hoping to simply soldier the pot leads to completely bypass the pot. Stupid idea I'm now realizing. I have only managed to get a fraction of the signal to return and only out of one headphone. I did this by fiddling around in the amp until I found a connection that produced some signal. Anyone have any ideas how to make this bypass actually work?