Jim,
One problem I've found on the 18 multi point mix (and it was an issue in my JR days too) is that you often can't get the first point close enough to neutral to be able to set it accurately for say rudder to elevator mix in knife edge. I find I end up setting the point as close as I can to neutral and then playing with the mix percentage to get the correct amount at the stick position I actually need it at. The same goes for the so called program mixing feature. There should be some way to temporarily expand the screen view around neutral to allow these points to be accurately set. I have tried various work arounds but haven't found a satisfactory one yet.

Any ideas?

Malcolm