Say it ain't so! Man I remember tearing one down four times completely until I discovered why the oil pressure was dropping shortly after each build. I sure hope your's is a simple fix. Ours involved a file and a align bore.
Oh it's simple enough--Find the source of the leak and fix it--LOL. Yeah this sucks but it comes with the territory sometimes. I've had a pretty good run and I was due I guess. J.Rob
