I recently purchased a Gibson LP Jr and LP Jr Special. The Jr has the single dog ear P-90 and the Sp has P-100's. These are the first guitars I've ever owned with either of these pick-up's so I'm in unchartered territory. My questions have to do with proper set-up. The P-100's pole pieces are all screwed down fully and flush with the pick-up cover, but the P-90's are staggered at different heights. The P-100's have adjustment screws which enable me to raise and lower the height of the entire pick-up while the P-90 if affixed to the body and the only way to raise or lower is via the adjustable pole pieces. I'm guessing he P-100's will need to be adjusted like a tradition HB without messing with the poles. If this is correct, what would be a general height adjustment from the top of the poles on the high and low E's to the bottom of the strings? Same question for the P-90's, but should all pole pieces be the equal distance or different? If different could someone give me some general guidance? The previous owner had them all set equal distance from for each pole with about 1/32" clearance with the strings depressed at the last fret. Once again I'm hoping you guys can help. Thanks.