Stock headers won't seal

[NoviBlown]

Hello everyone, first off I'd like to introduce myself since this is my first post on here. My name is Chris and I recently purchased an 01 Boxster S with 22,000 miles on it I've been an avid car guy for years and I currently own the Boxster, an 02 Ford Lightning and a 97 Cobra.

Ok now on to my problem. The Boxster has recently developed a very bad exhaust leak from the headers. I purchased new gaskets and installed them but that didn't help at all. It's leaking so bad that it's throwing a check engine light. I have removed them about three times now to get them to seal and still nothing works. I'm beginning to wonder if the headers are warped. Has anyone had this problem? What should I do from here? I've tried coating the gaskets in copper RTV which has always worked for me but this time it did nothing.

Thanks!