Here is a horra story for you. I took my gtr to my regular mechanic to change a timing belt and a oil seal behind it and it took 3 weeks to do. while it was there he managed to put a hole in the radiator, strip the sump plug, and put a ding in the front radiator support from when he was using a manual impact wrench and missed lol. So even your own mechanic can stuff up. I look after 6 cars and now he wont see any of em and ripped off all his stickers he puts on. have a nice day.