Any chance that #2 main cap has been replaced on the block? A block that needs a line-hone will exhibit strange binding problems, as the crank saddles don't line up due to the different cap(s). Or the crank is out of round or the brng shell is defective.

Get some plastigauge! Its a dollar!


Preaching the Hot Rod Gospel according to the 4-stroke apostles:

Suck, Squish, Fire and Fumes