The detent plungers on the repro's are not the best which is the reason I have replaced so many. The repro plungers are a bit off on the profile and do need work or replacing. The early repro's had a lot of slop in the turrets and the detent plunger springs were very week, so a major problem. The current crop is much better and I have "tarted up" a few of the later ones and they seem to be much better. The odd repro scope has also been slightly out of focus and that is a bit of a problem as the OG lens is not easily removable, but I'll not get into that at the present. If you do get one that is out of focus, best send it back for a replacement. I've recently broken down one out of focus scopes just for parts and a closer look of the internals.