See if he take the work and farms it out to other machine shops and picks it up and tells you its ready we have a guy here that does that, and some shops may have very good machinist but rather do quik turnaround work for their profit. id find a shop who does majority of high performane engines and look at the equipment hes using and whos using the equipment and try to know what their lifestyles are like, drinkers drugusers etc can be found at reputable shops.