1. TAB blade or stab, as stated above.
2. Wipe off those magnets below the cleaning assembly. stuff likes to stick to those and cause disruptions on the PR belt.
3. if its REALLY light paper, it could be buckling on the pre fuser vac transport
based solely on your description, and not seeing it. Moneys on 2. or something else dragging the belt. look all around it. i had a hair hanging from the top once, barely touching it.
if it was fuser, youd have an obvious spot on the roller itself.