it certainly sounds like a ground issue to me. Even at 2-4 Kv (insanely low voltage for any gun) epoxy should stick quite well. How old is the powder, has it gotten damp, etc etc...
what are you grounding the part to? Is the thing that you are grounding it to (metal rod for hanging, etc) attached to a good ground and is clean of all types of debris? Sounds like two things ( bad ground and old powder maybe?) happening at once. Are more areas coating than others? (I.E. ~ are you having a Farraday-Cage effect in tight corners?). What's going on around you.... is there a volume of air rushing by and taking the powder with it? How old is the gun and was it abused or dropped at any point? Throw down some answers and we can maybe get to the bottom of your problem..... Russ
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