My stock muffler does a loud fart sometimes. Doesn't really bother me much because I don't have my hearing aids in when I ride. I am going to put a slash cut Jardine on next month and it will be louder. Is there anything I can do for it? I will be changing the main jet from 145 to 150 and am wondering should I change the pilot jet from 52.5 to 55? That used to solve my farting problem on my Yamaha 650. Course nothing stops ME from farting while I ride!