I have a Lanier Stinger 60 size arf.. I put a Super Tigre G-90 on the front of it with a Bisson Pitts Muffler. I noticed last night while breaking the motor in the cowl started to get hot almost to the point of melting. The muffler has very little clearence between the sides of it and the cowl. any suggestions on what i should do. Would it be easier just to cut the cowl or is there something else i could do.. any advice would be GREATLY appreciated.