OUCH! The problem with line-boring a stovebolt, or any other engine with a gear-driven camshaft is the fact that any cutting that's done into the block moves the crankshaft and the cam closer together. When I was set up to do line boring, I always made a tiny scratch cut into the block, and took most of the material out of the caps. If you can find a competent shop to try to correct the damage, have them measure the fit on the timing gears before doing anything else. Do not let the shop that did the damage touch it, or anything else you own. They've already shown their incompetence, and another bite at the apple shouldn't be an option! It might be possible to install another #2 cap, and do most of the boring on it while removing little or no more material from the block, but it would take a well-experienced master machinist to do it right. Good luck!
Jerry
