Thanks for the reply!
It's actually not being used for conduit at all, but it's the cheapest thin wall steel I can find without placing a larger order through a steel supplier. It's going to have some weight on it (canvas hanging, and maybe something else now and then), but not much, and there really is no way I can brace it at all over the 8' (It will be 8' now, definitely.) Maybe I could place something inside of it, like put a 1" inside of a 1.25" or 1.25 inside of a 1.5", but I need to make sure it won't slide around at all
Hmmm...