hey guys I have to change rear rotors on my tahoe they are original been on for 94000 miles. I know they are going to be stuck on pretty good, and i got one bad arm from surgery so im thinking i might have to use a hydralic puller i saw at harbor frieght. its a 12 ton 3 arm gear puller reviews on the site many people used it to pull rotors. but my concern is ive never tried it and worryed if rotor is realy stuck if it might damage the axle or bearings because on picture it looks like the push screw is pointed anyone ever try this ?? ps its an 04 tahoe Z71 4WD