I've been fighting my 600 jr. for a long time. I can't believe I've just been fighting it for as many thousands of shells I've loaded on it. Anyway, the problems all revolve around alignment problems. The main shaft has a ton of wobble. I can wobble the machine a good 1/2" either way. In the past I've just shoved something in the size, forcing it left, and living with it. Crimps were never great, but always functional. I've recently tried to get the shaft centered, and when I do, the crimp starter is WAY off, probably 1/4". I can't adjust the shell plate at all. I could try and slot the hole to make the crimp starter adjustable, but I can't believe it can be so far off. On top of that, what started this all is I ended up breaking my crimp starter. I bought new ones, both a 6 and an 8 point. Now even loading like I have for many years, the crimp has a huge split in it. The inside of the starters have huge ribs for what I imagine are alignment. The problem is they fit so tight, they end up essentially crimping the outside of the hull, and with my huge alignment problem, end up ruining the shell entirely. To add to that, another problem may just be a characteristic of MEC. The crimp finisher is very finicky. The best crimps come from mostly non-compressible heavy loads like steel shot. When the load is compressible, it seems the cam adjustment is a very fine line. Sometimes I just leave it loose, and re-run them with it tighter. Some things, like round balls are just plain impossible to crimp with it. The alignment with the shell doesn't seem too bad on the finisher, at least not like the starter. I've gone to loading back on my Load All II for now, I forgot how well this thing works, it just lacks the last punch to tightly crimp heavy loads. Can anyone point me in the right direction to fix the MEC? I'm thinking of drilling and tapping both sides of the base, and using screws to center the main shaft.