The small local shop I got my block bored at doesn't have the capacity to balance... seems to be common around here in Alaska (not many machine shops around). They told me I didn't need to balance the rotating assembly with the new pistons if I'm not spinning it up to the 6500 rpm range constantly. I don't really believe that... Its frustrating, but the only shop that balances around here quoted me $1140 for a crank grind and balance...