Vincent.. it leaks because you reused some castings somewhere on the engine. This cylinder was subjected to a few coats of nasty aircraft paint stripper to remove the black paint. It was then given a thorough high pressure wash... heated in the oven to drop the liner out... cleaned up some more and then run through my lovely bride's dishwasher. This is what came out when I heated the muff to install the liner. The cylinder is now mounted on my yet to be finished Comet. It hasn't started dripping yet, but the surface seems to be getting darker. Its like a big oilite bushing. Good thing I didn't have to TIG any fins back on.