Just bought some speakers and an amp off craigslist for $60.... so far they're great, jus one thing, the right side speaker plays just louder that you can't notice it at low volume but when turned up you can feel the bass difference (3 way tall boi) doesn't really effect me but I do wanna have a working balance knob because when I jam out I want equal sound on both sides, get the full effect, how would I go about fixing the knob? I should probably take a volt meter to the knobs leads on the PCB but I don't wanna do it atm cuz I literally just got it all set up. I'm thinking the easiest way would to be to replace the entire knob but I dunno what the resistance on the knob is.

Amp: JVC RX-315