pinch rollers, are sealed bearings. cant oil. most of the internal turning points are....same. it you got it open and can hear which one is making noise, 3 in 1 oil, sparingly on the seal of the bearing and roll it till squeak stops. unlike the CX-24, the older PNC-1100 is a much better built machine. the CX turning points are nylon bushings. which in time will egg shape and wallow out. these sealed bearings are hard to re-lube, but if you take the time and let the 3 in 1 work into the bearing...WITHOUT SPILLING OIL ALL OVER EVERYTHING, you can get many years outa that old gal. if you move up to a newer model...CX-300 is an excellent replacement. its what i have now, and you would not belive the speed, and quietness of a 30" machine.