Raimey;
If I am understanding this correctly you are saying the lever would originally have stopped right of center. After adjustment is made it will again stop right of center, only when in need of adjustment does it go to center.
This is different from my J P Clabrough & J P Sauer each of which have no adjustment & the lever has always stopped at center & always will. Also on my early Lefever the lever always stopped at center, bolt is adjustable but the adjustment doesn't affect lever position.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra