Exuast leak, any ideas?

[CaptKirk]

I had a new SS cat back put on some time ago and have had it back to the place (Tuffy) twice. The conections between the cat and muffler leak. I don't know if they don't line up good of if there is a donut gasket that they should have replaced or what. But, its really annoying. They used some sealant paste stuff last time. It lasted a little while.
Has anyone had this problem?

 

[huskyfan23]

Probably use a doughnut gasket. I had the same problem and a new gasket fixed it.

 

[BeauJ]

If it just keeps coming off just get them to weld it up for you.

 

[ExplorerDMB]

I agree with both of the above statements -- either/or, or both!

-Drew