Film Scratches

Rollers in the processor are dirty.
Guideshoes are misaligned.
Crossovers need adjusting.
Feed tray edge is rough or scuffed.
Film was packaged loosely and has obtained vibration scars.
Film loading bin is dirty.
Dryer rollers need cleaning.
Fixer in the processor is depleted.
Developer in the processor is under-replenished.
Developer in the processor is depleted.
Improperly mixed developer or fixer.