This posting to comments stuff got old fast.
Here's your advise: You're not together yet. PUSH HARDER.
Align up one side (1 i-beam truss segment)with the bolts(the big ones) and the inner pipe. Put the bolts in, tighten so they won't come out.
Now, put the T on. LOOSEN IT UP. In fact, take the bolts out of the cross-piece and use a flathead screwdriver(large) to wedge the opening FURTHER OPEN if necessary. Repeat top/bottom. Or, hell, remove screw and nut, place nut between the two tabs to force an opening. Do this on both tabs on both T's(the T-section that goes through). Put as far as you can towards the large bolts holding the inner support pipe in place.
Now, slide the other i-beam into position. This is a pain in the butt and is going to take a bit of time. If you have safety straps, use those to help cince it together SLOWLY. Or a large rubber mallet, but don't go wailing away like a maniac, be deliberate, but intentional and gentle.
Once the ends of the i-beams meet, you'll be fine. Get a friend to help, it goes way easier. Well, easier. If you can do it, don't take it back apart when you're done. I HATE doing that!! That's why I leave mine together.
This is a common problem.
Simply put, if it lined up before, then the i-beam trussing is fine. If it's not lining up later, then YOU'RE NOT THERE YET!!
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