People recommending people who aren't experienced mechanics to do their own work is about as bad advice as it can get. Most jobs I take on these days take 100% longer than normal as I have to correct mistakes form others who should not be touching their car. every stud is needed on the turbo for there not to be a leak. I can't tell you how many cars come in here with leaks its pathetic. It takes good knowledge to correctly deal with potential stud breakage/strippage and the like.