I will add that normally on an Intruder when we pull the heads, the top bolts have some oil or belt residue. These were perfectly clean. And the underside of the heads were amazing. So if nothing else it looks like a good set of cylinders and heads. At the same time i was pulling apart a 82 engine. The 82 was a completely different story. Oil injection had been disconnected and ports plugged. Pulled the flywheel to find that the crankshaft side of the crankshaft seal was missing. When I pulled the head, the mag side had hammer marks like a broken ring. For me that is enough evidence to confirm that a former owner had a leaky crank seal, lost a piston, replaced the piston and switched to premix thinking that his oil injector was not working. And while i did not see the second (or third) piston showing signs of failure, clearly the engine had been parked for some time. I am thinking that the 79 top end is going to go onto the 82 bottom end for a new happy power plant.