you get what you pay for I hate to say it. I try to do as much as i can myself for that reason exactly. I used to work at a local dogde,chev,kia dealership and i remember watching a mechanic do some warrenty work on a kia which involved pounding out the cat converter to fix the muffler problems. I will never forget watching him with a pry bar and a hammer just clearing it out. happens all over