Kiichi, how much higher are the poles than the top of your pickup? Are we talking about millimeters difference or only fractions of millimeters?
I have just measured them on my Ibby S570 with RY bridge and Mule neck.
Now I am not talking top of PU to top of pole piece, but top of PU to the line where the rounded top of the pole piece begins as that was easier to measure (and represenst better how much I actually raised them).
There I got about 1mm to max about 1,2mm.
As a point of reference, fretted @ 24th fret the distance between string and top of pole piece currently is 2,5mm treble, 3mm bass side on the bridge and on the neck 2mm on both sides.
I have tried a freaking lot of different things over the 2 years I have them and I will probably continue to, but this is my absolute fav so far. Might back the bridge up another quarter or half turn and see how that goes.
I just started the process on the new SH bridge SM neck set and my Manhattan neck, plus I think I will try a MQ neck I have lying around in place of the Mule in the Ibby. Yes, I am mad...
With the AM set I have it also worked to get me closer to where I wanted, but the guitar was wrong for them so they are looking for a new home too right now, as the SH/SM combo took their place.
All this tweaking can really take a lot of time, as the height and pole piece height work of each other a lot and you just gotta try a lot of different settings.