My 3-9×40 did the same. Have not tried to free the locking ring from the lens carrier, have you Portly?
It's an old thread I know but today I bit the bullet and gave it a go. The trim ring on one of my 2-7's was hand tight and when adjusted outwards it brings the lens carrier with it, the other 2-7 needed a couple of baby boas and again the trim ring brings the carrier with it.
About a full turn and a bit provides focus/parallax at about fifty yards, I'll have a play with the other 2-7, 3-9, and 4-12 later this week.
My 3-9×40 did the same. Have not tried to free the locking ring from the lens carrier, have you Portly?
Plinkerer and Tinkerer
No mate, I was thankful that the carrier stayed attached to the external ring to be honest as it means that I don't need to go anywhere near the lens with something which might cause damage. I think that when I do the second 2-7 @ 25/30 yds I might end up with a gap of a mm or so on each scope which I will fill with an O ring.