I snapped a couple of pictures where the torsion bar fits into the frame under the trailer. The torsion bar that lifts the awning side is maxed out, but the other side still has a lot of adjustment left. I might install just the one torsion bar and keep the other on hand.
Note the extra room in the frame that holds the torsion bar. The bolt could be screwed down more to increase tension on the torsion bar.
Note that the torsion bar has bottomed out in the oblong hole. The bolt will not be able to screw down any further to put more tension on the torsion bar.
I haven't had a chance to highlight where the frame can be ground out, but you would make the oblong hole in the frame longer towards the top. As you can see, there isn't much room, but it can buy a turn or two.