Currently working with Dynomax on this issue. The driver tailpipe is creased behind the first bend around the gas tank. I initially went through the vendor I bought the kit from and was sent another tailpipe with the same problem. Working through it with Dynomax directly this time. Not a huge deal and par for the course when doing a project like this. The key is working through it and Dynomax's warranty department has been a champ so far.
A little blog about the build process of a car that almost got away.