I just installed a used catless X-pipe. But after firing her up it was apparent I had an exhaust leak. It is leaking where the X-Pipe bolts to the headers. I think it is due to the flange being bent from over torquing of the bolts by the previous owner, preventing a good seal. Any ideas for solutions? I was thinking some kind of thick exhaust gasket or something? Otherwise it would be impossible to flatten out that flange. Here's a pic....you can see it will not tighten any more because of the lip on the header stud.