I couldn't find any thread like this so I am starting a new one. I have recently finished building the 80cc kit and it has been running smoothly. The only problem I have is that the engine is too loud!!! I have tried putting steel wool into the muffler and have also tried putting pipe insulator around it. They both work well for about 5 minutes until they get to hot and burn to a crisp. Has anyone hushed their muffler successfully yet?