Installed a new set of Cobras 909. WOW! they sound fantastic. The problem I'm having,has anyone had a problem with Cobras are not tightening secure enough? I'm noticing that the right mufflers keeps sliding back. At first I had no idea what was causing the muffler to slide. After removing the muffler i found that the slit on the tip wasn't completely gaped. One side of the edge's corner was catching the other sides corner keeping the gap from closing when tightening. I used a very small file to separate the two corners letting the muffler's gap slide into each other onto the head pipe. thought I had solved the problem until this passed week ride. The muffler slid back once again. Thanks
I ride a HD 2018 Tri Glide. Lot of mods.