We have a new UF-8200 that is multi-feeding from the drawer. Every few pages, it will pull anywhere from 2 to 7 pages, sometimes in a tight stack, sometimes staggered a little. I have been over everything in the drawer, springs, separation fingers, lift plates, everything, and can't find a problem. No obvious problem with feed rollers, either. These are usually reliable and I've never seen this before. Anyone else seen it or have any ideas?