Just bought one, an issue with this scope is limited dioptre adjustment which for my eyes doesn't allow me to get the reticle sharp. I found a solution by finding a 30mm +2 close up filter fits precisely into the eyecup, and corrects the reticle into perfect focus. It does increase the mag very slightly, but its easy to wind it down a bit to restore the 10x if thats what you want.

Hope this helps others who have perhaps given up on this scope due to the limited dioptre adjustment.