I have an old Azola custom bass from about '96. i played it religiously for a few years, and then started playing other basses. My mom let me take my life savings out and purchase it when i was a junior in high school. She recently passed away, and was thinking of playing this on a few upcoming gigs coming up with my band that occasionally does traditional irish pub band stuff. (i've played upright with them before, this would sound similar.) Problem is, when i switched out the battery and plugged it in last night, there was a crackle, and i had to get the cable sitting just right for the sound to come clear, otherwise there was crackling and/or no sound from the bass. Anyone have any suggestions? There is only a piezo pick up, and i think i remember the pre-amp being an EMG. I typically don't mess with wiring in my basses, so i'm not sure if there is an easy fix, or i should just take it in, but if i take it in, i won't be able to use it thursday night. TLDR: Help! Old bass, seldom used! Makes weird noises! WHat do i do?