Thanks fellas.
Derek, it is a hard for me to say how much play I have as I have yet to fully, fully assemble the bench and put it though it's paces. That said, when I screw and unscrew the chop there is plenty of wobble. It am not sure if that is good or bad. Also, from what little I have used it, I will admit that I am a little disappointed. It does hold as well as my 8"Jorgensen with wooden jaws. I planed out a slight convexity on the chop clamping surface and toed in by adjusting the chain drive. This helped alot but I've not used it since. It has been disassembled for finishing.
I am quite interested in your "fix".