Re: Adjusting a P90?
With HB's being so easy to adjust, you'd think someone would have put more effort into P90 height adjustment. We can put a man on the moon, but...
Dog ears are easy, they sit in a tray that's attaches to the body. There's a decent amount of PU/wood contact. You can raise the PU height with special made plastic shims (which are grossly over-priced).
The soap bars I've seen all rest on foam rubber pads, and the PU holes are cut deep. I've never been thrilled with this method, it seems so lame. I use two different mounting modifications. The simplest way is to use springs between the PU & the wood. I cut a mormal HB spring in half (one half for each screw), and cut out a small section in the foam for it. Then I fill the old screw holes with toothpicks to give the screws a tight fit. I get some flexibility in PU height with the springs, and there's a little more vibration transfered from the wood.
The other method is the best, although it takes more time & work. I get a pack of wood shims from a hardware store, and use two or three in each PU slot to build a platform. The shims are angled, so you cut the piece that'll give the top a flat surface. I use wood glue & a couple screws to build the shim platform & attach it to the body. You have to file or cut a small channel in the top shim for the PU wire, so the PU can lay flat (which is very easy to do). I keep checking the height by putting a yardstick across the bridge & frets. Then I screw the PU firmly into the shims. Once this is in place, use the pole peices to fine-tune the height. This gives great wood-to-PU transfer of vibrations, and more sustain & low end. I did this on an old-style SG Special, which needed that. On an LP or 335, I use the screw method.
