I was not able to turn my 1951 Farmall Super C over with the hand crank. Pulled the head of and found I had rust in my number three cylinder. All other cylinders are clean and look real good. Tractor has sat for a number of years. Hoping that the rust was caused by a bad head gasket. Had about one half pint of anti-freeze in the oil pan. Other than a lot of prayer, what can I put in that cylinder to break free the rust. Any ideas will help. I've read a lot of them at different sites....looking for first hand knowledge. I'm prepared to change sleeve and piston if need be. The clutch is not froze up, so I'm looking at the cylinder to be the problem. Thanks....bigd1