I have an older dewalt dw733 12 1/2" thickness planner it has started skipping and jerking when you send a board through it even with a super light pass. I cleaned the rollers and waxed the bed but it is still jumping and skipping. I checked the roller drive chains and sprockets they look good. I ran it with the cover off and the roller drive chains jump real bad when it skips but they are not skipping the sprockets. I was wondering if anyone else may have had this problem and what the solution might be. I am wondering if it might be a broken gear inside the motor.