Car is a 93 Prelude Vtec (all wheel disc) My brake pads seem to be dragging along certain spots on my rotors on the driver rear.

I replaced rotors and pads all around recently because it was necessary, but I also noticed the problem before replacement. I assumed the rotors were warped, but not the case. When spinning the rotors over, they seem to be dragging on something inside the caliper creating kind of a scraping noise. This only occurs at certain spots on the rotor when turning it, not the entire time. (IE. it only scrapes at 3 and 9 oclock on the rotor) Car also does the same thing on pass. front when I make a left hand turn.

I had no LOP's after assembling everything. What can this possibly be?

Edit- pistons were not seized in calipers, they pushed back freely when doing the pads.