I've been having an exhaust leak probably since the beginning I modified a Bi-turbo on my Honda Urban Express. The reason, I thought, was that there was no exhaust gasket. I went to wal-mart and got some High-Temp RTV silcone gasket maker. Has anyone ever used this stuff? My plan is just to use a large amount of this stuff to see if it will stop the exhaust leak, but not too much. Also, there's a leak around the header and expansion chamber. Any ideas on how to stop the leak? Thanks for your help.