Springs are the one thing I haven't messed with yet. How can I dampen pickup mounting springs best? (I will try to dampen the tremolo springs on my PRS Brent Mason - the tremolo is locked, but the springs are there).
I dampened it with foam rubber, so the springs had freedom to adapt to pickup screw adjustment, and this way they are not allowed to vibrate or cause any rumble. I made foam strips (4mm x 4mm) with scissors and then wrapped those strips around screws so they were touching the whole springs.