It sounds like tinman had pretty much the same experience I had. One thing I did that helped the primer feed situation was to mark the pusher rod where there were only one primer left. I crimped an egg shaped fishing sinker to the tube at that point. When the sinker hits the tube I know I'm out. Also, the Dillon primer warning can be mounted to the LNL unit without much fiddling.
"Of all the things I've lost, I miss my mind the most." A. Brilliant