Just dont take anything requiring too much disgnoses. They told me my shifter was installed backwards. It really wasnt, it was just a young kid whow didnt work on cars from 80s previously. It was just a bad cable.
I took Taurus there with drivability problem, they replaced intake gaskets, still has problem, jerks a bit going down the road, steady speed. Thats 2 problems they couldnt fix. I dont mind someone trying, but its 80 dollars a pop even for failure to diagnose properly.