I dont know the truth to this but my local shop Pro-Strip claims that Jet hot does not complete coat the inside of the tubes, just what you can see or what they can get to spraying through the outside. At Pro-Strip they have a wand that they run all the way through the tubes to make sure the interior of the pipe is 100% coated as well as the outside and he said this is one downfall of the JetHot coatings. Smaller local shops certainly are expensive but sometimes knowing the right guy helps also from what I hear as I know a few people that get things dirt cheap over there.
