Hi Andy,
I'm doing the same thing you are. I've got a '73 Dart. 72blu has got this pegged. Through the LCA's range of travel there is/was only one place, and one place only, where the hex socket will line up with the hex on the T bar, and that is up just bit from where it hangs near the bottom, at approximately 45 degrees.
I should have my new torsion bars this week, I will have to wait for the weekend to install them. I really believe the left one has lost its tension, nothing else looks to be damaged or worn.