Been out putting a few miles on the 225 engine, and everythings great apart from an oil leak thats just developed. It looks like it could be the crank oil seal, dribbling down from behind the fly wheel. Thing is it only leaks when the engine is off? I've checked everything else and all seems dry. Anyone had a similar prob on the f series blocks?? Im not using the original flywheel which may or may not have anything to do with it. If its deffo that, then its engine out!