I had mine slightly refurbished by a repairman friend. He did change one regulator in the PSU and clean all the pots with compressed air then lighter fluid and finally some lithium grease. Especially the mix pot was causing problems and constant crackles in the tone. It was a super quick job (he...
Three or four springs is OK for me. Two is not enough, five is too stiff. Too many springs and flutter won't work. Too few and it's too wobbly. Leaving some room for the spring to contract/expand is nice for the trem action. Don't tighten the claw too close to the body. Try different configs to...