Looks similar to street bike stuff. How's it secure to pivot bolt on swing arm? Is the shift lever travel shorter? I have similar issues with my 13's, but I've always just rotated( clocked) the lever different. But that developed a different problem that only occurs when I'm trying to down shift. I have to look for the shifter. I think having the larger arm would help with that. Sorry to but in, but this is a common problem for many.