Hi fellas, I keep cracking vert header pipes. Ive tried new rubber mounts, new gaskets and different back boxes(termi and racefit). I've done it on both my 749's so i'm guessing it's how ive fitted them. Is there a particular order on fitting the parts? The termi has now cracked just below the entry to the back box as well. Last weekend the spring between the vert header and the midpipe snapped, its original so not sure if its age or a clue to the problem. This could also be why the back box cracked, not too bad so should be able to get that welded. Any help is much appreciated
