Hey CeeGee.. It's where you go in to a Knife Edge and while applying
the rudder in the K.E. the plane either pulls to the belly or canopy so
you need to apply some elev also to correct for this, Or you can "mix"
it on your computer radio... (Rudder(master).. to Elev...(Slave)) That
way all you have to do is activate a switch when doing a K.E. and both
surfaces move with just the rudder input.... Same with the Aileron if
the plane also rolls with the rudder input... Both are set by the same
switch on my radio... I.E. I have 4% Rudder to Elev. and About 50%
rudder to ail.. on my UCD... I activate the switch and when I use the
rudder the other two surfaces move along with it...

Sorry about that... I have 3* R-E & 25% R-A....:-) I'm still playing
with the settings...