Hal, i don't know as i don't live there but, my suggestion to you is to take you dial bore gauge with you and ask to see a block they just machined, then ask to measure it yourself. If they balk then i suggest you walk away with your money, if not then measure the mains and see how close they came.
finding a good machinest (sp?) is a pain in the ass because most people just take their word for it that it is done right... but, often not the case when you get it home and start checking their work...
hope this helps and good luck
ralph