NL Pure help

[JM57]

Several years ago I purchased the NL Pure 12x42. To be honest I haven't been real happy with them. my biggest complaint is the focus is so fine that every time I bring them up I have to refocus which takes a few seconds because of how touchy the focus is. Constantly adjusting the focus is not what I want to be doing in a hunting situation. When they hit that sweet spot they're great glass although in low light its tough to find that sweet spot in the focus. So are these just not the binos's for me? anyone else have this problem?