I have an RT-1 and have not had any problems. I did repack it once, in six thousand miles. I used the FMF blanket repack kit and it worked great, The whole blanket fits in the can, just have to cut to lenght.I used quality rivets. There is no need to remove the exhaust tip end to repack, so leave those rivets alone. When replacing the rivets don't put one in and tighten it Put one in and tighten enough so it stays in loosely. Do the same to all. Then tighten one and skip to the next. I also found that the rear Jardine bracket can butt up against the bottom of the motor, near the bolt. I trimmed the end of the bracket above the mounting bolt so that there is no binding pressure pushing down on the can. Also, the right side spring that pulls the can to the collector pipe rubs against the collector pipe bracket. Put a small piece of trans cooler hose around the spring to lessen the metal on metal vibration. These hints may sound like bull but they have worked for me.