My dad took the Z I currently am working on to a random mechanic and he fiddled around for several weeks then gave it back because it was too complicated for him. This guy is a supposed pro too whith his own shop. Since I am a WyoTech degreee holder and have owned several Z32's he brought it over to me to fix. I had to do some relearning cause I havent owned a a Z in over ten years but the teardown wasnt all that bad once you realize where all the dang hoses are at.