I have an 05 WR450f and I have/had a yosh carbon pro on it for a little over a year. I noticed the sidewall on one side was getting thin. My 1st thought was a little tire rub but doing the measurements it is not the tire. Sunday after riding I went home and clean the pig up and noticed the muffler had a huge blowout on the side. Question is.. Has anyone had this problem? If so, what did you do?