Havent checked compression yet. Not sure about the seals. People have told me that the pistons, sleeves, and rings and bearings are pretty easy to replace.
I replaced my radiator 3 months ago. Last week the front tire went into a trench and the radiator developed a tiny leak somewhere. I think its leaking from the radiator tank and not the fine. It's weird that a trench could twist the "frame" enough to ruin a radiator.
Did the electric ignition conversation last month on a massey 135 continental z145. Engine was reliable prior to the conversion but now the plugs are much cleaner and it seems a lot smoother. People have noticed that the engine sounds different...in a good way. Lol. The engine does blow a little...