So fiddling with my lock some more tonight after cutting a piece of aluminum to use as a measuring tool. What interesting is last night when I was having the great success rate with locks , the arm was much closer to the wall than 13/16”. My guess is it was 1/2” away from the way.
With the tip of the arm 13/16” away from the wall, the ball barley makes it up the arm halfway before coming back down.
I’m going to keep fiddling away here and see if I get anywhere.