I get it regardless of whether I'm palm-muting or not. If you use too much gain the pup gives off this exaggerated, and extremely annoying, snarly/twangy overtone that basically forces you into one tone option in order to minimize it, which, in turn, sort of negates the volume and tone pots as further tone sculpting options. I've found that boosting at 400 and 1.5K offsets the worst of it, whereas boosting at 3K seems to aggravate things a bit more. I'm wondering now if Seymour Duncans actives react similarly? https://www.youtube.com/watch?v=R5ZN-1etkNY I spoke too soon. @2:45 on this vid demoing the AHB-2 Blackouts you can hear that snarl/twang thing going on. Except I get it worse, as I'm using strings that are probably double the gauge this guy's using.