Hey guys. My backup and live bass for those sweaty outdoor shows is a mid 90s mim jazz bass. However I've been getting a lot of hum out of certain places with bad lights. The interesting thing is that the hum only occurs when the tone knob is open. If I turn the tone knob to 0 the hum is gone because the pickups are wired to be hum canceling. Is this likely a bad tone pot that could be replaced and get rid of the hum or is there something more sinister and difficult at play. Is my best bet to have someone replace the pot or should I just buy a hum debugger.