Aight, I got the DC 4-2-1 header installed, but the 4-6" section of piping that goes from the collector to the cat converter won't sit flush to the collector, it's cockeyed:angry: So I disconnected it from the cat and tightened it to the collector first, then wrestled with it to get it back connected to the cat, now it won't sit flush on the cat:madfawk: Result:my car sounds like a bucket w/a major exhaust leakh: Anyone else have this problem and how did you fix it?