Hi guys, I need some input. I picked up a used YZ exhaust for my WR. I installed it on the weekend and fired up the bike. Well I think I was getting exhaust leaking from the connection to the header, but I couldn't tell for sure cause the whole YZ pipe was smokin. The previous owner said it melted some plastic on his bike and I think that was what was smokin. But I was afraid there was more to it than that so I took the exhaust off afraid it may melt my airbox, sidepanel, etc etc. Here are some images of the YZ exhaust. Would a new gasket (right name?) solve the leaking exhaust? Here is the melted plastic on the pipe. Would it be safe to run this on the bike till it all burns off or should I try to remove the goo? Or should I just toss the YZ pipe? Thanks.