I recently purchased my 3rd March 2.5x25-52 and noticed they changed some things. Mainly the parallax adjustment has a lot more travel. It seems like it is going to have more fine adjustment to it. I don't know if its me but the eye box seems more forgiving too. I have not had a chance to get it into the field yet. Any one else find anything else new about them. My other 2 are not old at all maybe 2-4 yrs old. Not sure when they made the change.