I just got a Leo vince SBK full exhaust for my 06 1krr. I installed it to what I think to be the correct way going by the book. I have a mean and loud leak coming from the two middle header pipes. I used my factory header gasket, am I not supposed to? Its not VERY VERY loud, but its 100% noticeable. Im kinda pissed as anyone would be after spending good money on the exhaust and I just want to get it down pat. Any info is appriciated. Thanks guys.