I have been fiddling around with pickup levels a lot, trying t even out sounds and strings and tones. The humbuckers allow easy pole-piece adjustment (on one coil only, why?) to even out string-response. It seems single note playing and chord playing requires different set-ups. My Pointy guitar has a single coil in the middle, which I can get to volume-match the bridge humbucker, while the neck humbucker is much louder. I can live with that, having a volume knob, but the problem of balancing the strings on the single coil remains. Why does a single coil pickup with screw pole-pieces not exist?
In this case, the G string is the problem. (From internet trawling, it seems the G string (guitar, that is) is almost always a problem, on any type of guitar.) Overly loud now, it stands out if mis-tuned, irritates the ear by dominating the mix, and makes chords sound unpleasant. The pickup is "flat" pole-piece, as recommended for large radius fretboards, not staggered. I would like to push that piece in a bit. And raise the D one a bit. Maybe the treble E one too. This is apparently possible without breaking the coils, but one has to remove the pickup to press the poles. This is not going to happen soon.
I have tried small washers on the "vintage" staggered poles of the Strat-alike, it does make a difference. But they shift around. And, also, come in standard thicknesses, limiting fine-tuning. The ideal would be to turn up small cups on the lathe, with different heights, to allow fine-tuning to an extent, and spot them in place with cutex when happy.
I am trying the washer trick on the Pointy guitar. I shall look for washers of different thicknesses, and spend some time filing down a few to get in-between thicknesses. Once I see whether this helps with string balance, I can machine up some pole-piece caps. Might be a while before I report success or lack of it, anybody out there done this at all?