The chain tensioner bolt on my son's KTM 65 SX is broken. The problem is the threaded opening inside the swingarm has suddenly disappeared. I had noticed that the bolt was gone. I figured it had snapped and worked the rest of itself out. So, I bought another bolt (Lowes). I went to screw it into the end of the swingarm and found nothing there. I had seen about 2 years ago an article on such a thing in one of the MX mags. It was a quick fix of some sort. Ofcourse now I can't find that mag. Help!!