common problem
The best fix is to always support the ends of the headers using a spruce beam across both headers ,at the silicone/Teflon coupler, then adding tye wraps
It won't burn out.
Secondly
the entire header and pipe/can/muffler assembly should first appear to center it's self before you lock it into position
Failure to do so, is very common .
If you preload the header or the can, be ready for an early failure.