Well I read all the posts I could find on exhaust leaks and decided that anti-seize with a high metal content and high temp rating was the way to go. I have a leak between the header pipe and Termignoni cat eliminator pipe. I applied liberal amounts but not too much to both pipes and let it set overnight. This afternoon I cranked up the bike with great anticipation, well it worked great, no leak, for about 30 seconds and then pushed the anti-seize out of the joint and the leak is back. The clamp is as tight as I can make it. Any suggestions from anyone that's solved the problem (besides welding the two pipe together)?