I think so, not sure what pole pieces meant.
Cause basically I raise my action of my guitar and my single coil sounded damn off on my Marshall. It had a nice clear sound on distortion channel before I raised the action.
The sound became really muddy, dirty and awful. Lost the strat sound. I tried lowering the pickups but no use, its still quite bad. So hope to work with the pole pieces thing. Some guidance maybe?