Bruce are you confusing the eye relief adjuster that focuses the reticle with the magnification adjuster that sits just in front of this ???

You should be able to clearly see the marks which indicate what amount of zoom you are using !

The eye relief and magnification or zoom if you like are two separate adjusters...

There is a locking ring that locks the eye relief once you have focused it ... You need to undo it before focusing the reticle then once set lock it back up again....