i have a hamer slammer series that i just rebuilt. it is the style based on the stringray. it at full volume it about a quarter of the rest of my basses. is there some way to get it louder? its a HB with one volume and one tone knob

i would like to get it louder. it there a new wiring i should do? or new boost petal out there?
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Make sure the pickup is still good, sometimes if it's old, the coils are cheap and bad, and they can break and short out. Rather unusal, but it's possible.
Check the wiring too.
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