I have a 93 vert and am in the process of installing a new exhaust system. In the process I needed to remove the cross brace on the bottom. In doing so I noticed that it must have been removed before. Three of the bolts were missing and upon closer inspection I noticed these holes were stripped. Also one of the thread inserts in the frame twisted off the frame when I tried to remove it. I ended up cutting the bolt off with a hacksaw. Luckily there is only one damaged bolt on each of the four ends but would still like to repair the threads. Has anybody heard off a fix for my problem?