I would like to put another vote for Jet-Hot. I had my Schumacher Tri-Y headers coated 12 years ago in Arizona by Jet-Hot. They recently started having rust specs show up on them. I called Jet-Hot, they could not find any customer info from my original order. The customer service rep created a new customer number for me and said ship them to the Burlington NC office and they would take care of them. They came back to me within two weeks recoated beautifully. The customer service was great and they stood behind the lifetime warranty. No questions. Very happy!