engine on the stand

View attachment 1714844867

The highlighted areas ...

---the nut for the 'vertical' lockback bolt has broken away---
---You could also drill holes in the TOP of horizontal 'L' tubes,
weld a nut on the tubes, insert bolts & square things up.

Pretty sure that will remove about half of the droopsies.

Welder & time, don't know if You have either, however,
might be cheaper than a new unit, ohhh, and as already mentioned
Move the lower arms, & more weld on the arm to tube areas.
Just My humble$.02