I am dealing with this right now. I snapped one of the ss bolts off and have totally buggered the hole. I think I will have to have a local shop weld the hole and retap. What a frustration. Mine seized trying to loosen it back off. The manis weren't sitting properly due to y pipe turned a bit. Anyway, as I was trying to loosen everything completely and line everything back up, it snapped. I did a terrible job of trying to get it out and now the hole is too big and not centered where it was.