I doubt that clearance was too tight, but I don't remember what oil you used. I am about ready to fire mine off and it has .0021 on the rods and .0024 on the mains. I'm going to use a 5w30 oil. If yours was too tight I'll be screwed just like you.

I think a lighter grade oil and FGM's and you will be ok.

Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston