I was using this crank from my previous build for my 421 cub build, but once I assembled it, it did not pass a leak down test to my satisfaction. It was leaking from the outer seal on the flywheel side on the shaft itself. I then ordered a new crank from FAST thinking the used crank was no good, completed the build and it also leaked in the same location. Evidently I bought another crank for nothing, but oh well. Now I have this other crank that nothing is wrong with and dont need it. 300.00 shipped + pp fees or make me a reasonable offer.
This is where it was leaking and only dropped 1psi every 20 minutes or more.