Had my oil drain plug stripped out from them over tightening. I got lucky and threw in a new plug and new threads acted sorta as a tap and fixed it. Usually I don't have to worry about the oil filter being loose, the gorillas they got waving there signs must tighten the oil filters there too. I've crushed one trying to get it off of the block. Needless to say I don't go there anymore and I do my own work since I have my own place now. I cringe when I HAVE to take the cobra in for service. I try and do all that I can before I let someone work on her.