You ever figure out what it was...
i have this now with one of my C6501s...
happens with both fusers... Worse with one then the other.
I know i have a pressure plate on one of the fusers rears, where the pressure screw will not tighten, its stripped i think.
I have usually check the fuser pressure often - i keep one fuser for 12x18 and one for 8.5x11 etc. even know they get mixed up all the time.
Since its happens with both fusers i am leaning toward curling roller, only happens on 80# gloss, fine with Uncoated, 100# gloss is even ok, everything we run is duplex.... so hard to eliminate something in the ADU.
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