Glad it turned on the lights. This thread is where I thought I was before, oh well.
So whatcha going do? A stout endplate in your Dumpster? Or a piece of angle so the eye bolt is inline. Or maybe run the nut out to the eye , add a washer and piece of larger diameter pipe or tube or even a block, then tighten the nut so it's all in compression against the I-beam might be enough to solve the bending.
I scored enough 8020 ( 1530 ) to do the gantry at a decent price today. Now I have to go back and pick up the 6x8.5 lb steel channel I had my hands on yesterday. I was looking at same 6" channel you used in alum but even at surplus prices of $3 a pound , that's like $ 90 just for the 2 ea X rails. Steel should be about $ 35 at .50c a pound.
Getting excited to get started. Just need a deal on a Gecko G540. :-)