First thing I would do is burn the shop that did the machine work . Then I would still have the cyls and pistons checked because if you have to much clearance you'll have problems from the first pop. Low compression , rapid wear (because piston are cocking in bore),excessive piston slap (breaking skirts) , taking out cyls or crank. IF this is the case consider selling your brand new pistons, buy new ones THEN have them bored to match new pistons. JMHO, your results may vary !!