Hello, Iam getting close to my AW inspection and ran into a problem , after doing my weighing for WnB I put fuel in aircraft and did an engine runup. All engine temps were well within limits and all worked well however after shutdown I was inspecting for any leaks ect. and I noticed my cowling had gotten so hot below the muffler that it had bubbled the paint. The muffler I have is heavy about 9.5 lbs. and has dual exhaust pipes I do not know if it is a rotax muffler or not it was a hot day about 90 degrees but until now I have not had an issue. I pulled muffler to check for any obstruction and found none, any ideas? I do not have an EGT gauge ,could it be the wrong muffler? I have not found any pics of 912s having dual exhaust pipes.