that sucks man. i have had an experience with a mechanic like that. the guy i bought my old Mercedes from wanted to take it there for the inspection. and the mechanic did a crappy inspection, he didnt catch a bunch of stuff that was imortant for saftey. about 6 months after that the right-front ball joint snapped as i was backing out the driveway. anything over 20kmh when that ball joins snapped and i woulve been killed.