What issues with Leupold?

I would like to test mine.

I have spent enough time in light labs on the drilled and tapped metal bench, both at General Dynamics and Corry. I was designing missile course correction and night vision, but I know how to test things.

I am going to guess that the scope turrets have spring opposed right hand threads, and one could get backlash from going counter clockwise if the spring did not follow all the way.

My father put split gear adjustment in the M55 artillery design back in the 1950s so there was no backlash. I still don't see that on even the fanciest guitar tuning keys.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps