I put my headpipe on last night and instead of using hi-temp copper gasket maker. I used this Car muffler sealer or something. It had a grayish tint and when I put it on, I started my quad for a short period of time and It smelled like it was burning. I didn't let it dry I know, but should I replace it with the copper stuff. The headpipe looks sweet !!!

 

Hi temp copper stuff