There are some careless & irresponsible Techs out there. You can come across those kinds of people anywhere in the service industry. In my shop, I find that the fastidious owner who works on his own car is the most difficult one to deal with and invariably ends up with some kind of disagreement. He comes along with an attitude of distrust and that is not a good start. It is the seed of misunderstanding. If you give people a chance to prove themselves without preconceptions they will do their best. And if their best is not good enough you deal with it in a factual and understanding manner. This way both parties establish a relationship that has respect and trust. (What a perfect world we live in) Life’s good!!!