I have an exhaust leak somehow on my passenger side header by the collector. This is my Rocket 350 BTW. I've been seeing smoke in my pass side engine bay each time I started the car and let it run for a few minutes. I thought I was leaking oil somewhere because it was white smoke. I bought new valve cover gaskets, and RTV'd it and still see it. Now today I looked deeper and under the car and it's got an exhaust leak somewhere by the end of the collector. It's blowing exhaust out and into the engine bay. Is there a patch i can buy to rectify this or am I SOL without a welder to seal it??