A). Approach.... You have enough !'s and swearing to annoy anyone that might want to help you. B). Why did you install a know defective part (one could argue how bad that dent is though)? You know you are going to have to switch it out (and it is all 2 screws and you want labor?)? C). Once you drive on it, Coz loses any leverage he has on HKS to make it right for him. Basically you want Coz to do exactly what you said he is doing to you. Sell a used exhaust back to the factory. D). Calm down, it is the cheapest exhaust you can get, from the cheapest seller on TT.net (on most things), and you are bitching like you just got raped by a gang of mutant apes or something.