To me JB Weld is a temporary fix, period. Doesn't matter what it's used for, if it's used in place of a weld, it's not going to last forever. My cousin's 85 lt250r had the same thing happen, the stud for the case saver broke off and he jb welded it back in place. Worked for about a year but it came apart during a ride and he didn't find out until his clutch started slipping in a mud pit... turns out mud and water in your clutch makes it slip. Totally destroyed the quad, so that half assed time saving repair ended up being the death of the quad. Even done "right", there's still no way to completely remove all the oil around it, and it's not nearly as strong as an actual weld even in perfect conditions.