I just bought a closeout FMF "Q" muffler and found out it was one of the old ones made for the 98db restriction. I need it to go to the 96db or better. Does anyone know if I can retro-fit something?? I emailed FMF and was told this: "Hello, the muffler you have is a older model that we don't make anymore. I think that muffler will be around 98 db. That is what the legal limit was about two years ago. We do not have any parts for these older mufflers anymore. The new style end cap isn't compatible with your model muffler."