I have a Peavey Rudy Sarzo model bass from the late 80's. Recently I have run into a signal level problem. The problem is that I can't seem to get the proper signal level from this bass. I have changed batteries. When I plug it in to my rig, it sends the faintest of signals. When I run my QSC RMX-1450 way loud, with level set way high on sansamp and my pre turned up I can hear a very faint signal coming through. Switching the active/passive switch seens to have no effect. The terminals that you attach the battery to seem to be kinda fishy. The connection does not seem to be that great. If I play with the connection I get a failrly loud click when the terminals and battery connect better. Anyone got any ideas for me given the problem description?