My Coventry engine runs, but an air leak means it needs about 40psi to be reliable. The problem is that the mating surface between the port block and the cylinder is not air tight. I have tried two types of gasket sealer. The latest, Loctite 518, managed to seal one side but not the other.
I am considering a temporary fix of a thin layer of JB weld along the side of the joint that leaks, but it would need to be removable after Cabin Fever. Is this reasonable and would it likely work?