The problem I have with that idea is you expect the same idiot that effed it up the first time to suddenly become competent, and now bringing the idiot into the spotlight you have a resentful idiot which I would expect an even further diminishing likelihood of a positive outcome. Depending on the product and the manufacturer or dealer, warranties can often work out OK but sometimes you're better off paying up for a competent repair and actually identifying and solving the problem vs just a "free" parts swap or jerry rig to get you out of the shop.
Mark B.
Albuquerque, NM