Guys, thanks for all of the replies, lots of good opinions and advice. The problem I'm having is with the new RUM cartridge. I can't say for sure yet that it is the press, but it seems like it's pointing in that direction. I sent my Forster Comp Die in for honing and had them do a quick check of it. Something I do anyway. Rod called the other day and said they ran a couple of my cases through it and only had .001 runout on them. I get at least three times that. His measurements were before honing.
Anyway, when resizing a case and the ram is at the top of the stroke, the handle of the press sort of tweeks over to the right. It feels like a considerable amount, and I have never felt this before. Today, after reading all of the replies, I went back to it and gave it a good once over. The slop in the ram is evident, but no more that say 1/16 side to side. There is also some slop where the handle assembly attaches to the press. The part the handle screws into, not sure what it is called. I became a little concerned that the RUM case may need more leverage than this press and that it may end up tweeking something
The dies should be back this week and at that point I'll take my best cases and work through them and re measure each step to see what is causing it. Thanks again.
Flashole, if you're still reading this, I just gotta ask, why two UltraMag presses?