When I put my lift on, I added exhaust spacers. While trying to make my life “easier” I decided to use a tap in the exhaust flange so the inserting of the new bolts would go smoother. That didn’t go so well, to say the least.
So I finally got around to taking it to my local mechanic who was able to take a torch to the exhaust flange, clear the hole, and properly mount the spacers for good this time.