There is a black resin/splatter coming from the seam of where the pipe and exhaust header meets at the slip on part. There is no seal (sure seems like there should be a seal there) and the slip on stock pipe seems to be a little loose on the header (possibly because there is no seal maybe?) Anyway black splatter keeps leaking out of that seam where is slips on, don't know if that means its running rich or if that's normal. Need some help please.