On to a new project here. We did a sandblasting job for a friend and he gave me his B. 1952 and running great when he parked it 10 years ago. Came with a plow, a harrow and a 7 ft side cylic mower. needs a few sheet metal parts and a rear rim. I will blast it and still have enough primer and paint left over from the WC project. Problem is the engine is stuck. I sprayed Aero Kroil in the cyl about a month ago figuring that would do it. No luck. Put Marvel Mystery oil in about a week ago. Still no luck. Pulled the head today and Number two cyl had water and MMO in it but the cyl was clean when I drained and cleaned it. Number one had some rust staining on cyl wall but all MMO had drained down and it will clean up easily. Have tried using hand crank, tried rocking the tractor in gear, tapping top of pistons with an oak board. Tried pulling it a little with my scag. Don't want to tear up the clutch plate pulling it. Tried heating the pistons with a propane torch a little and respraying oil to get down to the bottom rings. Any ideas on what else I can do or am I going to have to tear it down. No water presant in the oil and anti freeze was good. Help