[ScotI]

It's hard to tell from the images.... What material is the tubing you used?

*EDIT*
Found my answer in post #111. I think you'll want to make sure the 'hangers' used allow for some fore/aft shift as SS likes to 'grow' when it gets hot. Certain sections will see higher heat vs others so allowing movement seems to keep things happy. Just my experience/s w/the material.