I have a PTO shaft on my 3pt spreader that is froze up. It will not slide in/out and I cannot remove it from the gearbox either. What is a good method to pull it apart to clean/lube to slide properly? I have tried PB blaster, heat, banging, slammer etc and it will not budge. I thought if I had a hydraulic ram like auto body/frame shops use I could make a couple of L-brackets and attach some U-bolts on each end of the shaft and push it apart with the ram. Any other ideas?