Ok, I've read the threads on GTT a search turned up and I think I should be coming at the main drive shaft from above to make access easier based on what I've read, but how does one turn the flywheel on the engine to align the zerks?? I had the mower off after finishing and decided that with 22 hours (99% of it mowing) I should grease the tractor. Got the two on the steering easy, 4wd shaft easy by just having the tractor in neutral and rolling it. Three on the auto connect PTO by putting the PTO selector to the rear PTO. Then can spin the Mid PTO by hand. I tried to turn the main drive shaft by hand and no luck. Tried to turn the flywheel from underneath the tractor and no luck there either. What's the secret??