Believe it or not, a lot of mechanics don't understand the realities of a mid-engine car. They are so used to working with front engine that they don't realize the weight has shifted. Some don't understand or appreciate the lift points. I know of a Volvo dealership that lost a DMC this way. It had a Volvo engine -- but in the back. Oops. In my shop it was required to test the balance of the car just an inch off the ground before lifting it. We also required 2 mechanics to tighten the wheels to spec.