well just be careful, I had the same situation, and after about 3000 miles I took the engine BACK OUT because of an itty bitty leak in the one soft plug you can't reach with the engine in place. Whereupon I discovered the flywheel I had installed with the tiny little hairline cracks as described above, had turned into major fissures. Which explained the chattering I had developed. It turned out the water leak was a good thing after all.