Originally Posted by
CarbonJoe
Loosen the screws for the hinge pin holders, push the arm towards the hinge pin holder and tighten it. Then press the arm towards the other hinge pin holder and tighten it.This prevents the hinge pin holders from tweaking when you tighten them, making them square to the arm. Result: arms move freely.
I'll give that a try. I did something similar that worked for the other arm to no avail so I'll give your method a try.