See if your machinist can follow these directions. 1--put the new main bearings in the block and caps and WITHOUT the rear oil seal. 2--lightly oil with 30wt, NOT Lubriplate. 3--lay crank in and torque caps to spec. 4--if the crank now turns freely with no hard spots then it does not need align boring (most shops align HONE if not way off). This should take no more than a half hour compared to several hours to face off the caps, install and torque, set up the boring jig, etc.
