I recently purchased a Reverend Buckshot second hand off of Craigslist. I tested it extensively before I purchased it. Just yesterday I plugged it into my Blues Jr. and I couldnt get any sound out of the amp. At first I thought it was the amp - but I tried another guitar and it worked fine. I plugged the Buckshot back in and I had to turn the Master and Volume all the way up on the amp - plus the volume knob on the guitar all the way up to get any sound out of the amp... What does this mean? Is the volume pot in the guitar bad? Could it be another issue? How hard is this problem to diagnose and fix? Help!