Hi, the corsair pto is like the delta 580 and triton IV. I have dis- assembled,cleaned and re-greased 2 tritons and my delta. Takes about 45 minutes for the 1st one then even less when you been there before. there is a 3 ball ball bearing and the the pto has a shaft inside a shaft along with a worm drive. everything in there rides in the grease that turns into a tar like substance with age. I use isopropyl and a ton of q tips to clean it all out then re-grease with a synthetic. effortlessly smooooth when all finished. It's worth the 45 minutes of time for the end result. Larry N1YW -- bruce bennett wrote: Not wanting to tear down my pto, I tried to lube the shaft of the pto with wd 40. Seemed to help but far from curing the freq shifts I was experiencing when tuning the rig. So decided to try something different. I have on hand a product called Tetra 500. It is a polymer and not a oil. Very fine particles in the lube are rubbed into the surface of bearing mechanicaly. Since it is synthetic it should not harden. So first I sprayed the shaft of the pto with tuner cleaner and ran the dial up and down the band several times. Seemed to help loosen up that stiff grease in the pto. I then applied one drop of the tetra product with a screwdriver and sprayed again with the tuner cleaner. My idea was to help the tetra to penetrate into the pto, with the thin tuner cleaner, and it seemed to work. I have had this rig since 1984 and can not recall it working any better than it is now. No shift in freq and very easy to turn. Will it stiffen up in the future? I don't know, but the advertisement says tetra is rubbed into the microscopic pores of the metal so I am hopeful that it is a permanent cure. Btw i do not sell or work for the company. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec