OK, I'm confused again. My understanding is that we definitely want a slight degree of Ackerman in a pull-lull system and that is accomplished (typically) by placing the connection point in the flying surface just slightly behind the hinge pivot point. Am I right so far? If this is not possible (as in the case of my rear flying surfaces where the control horn is build concentric with the tubing that forms the pivot point), can I, as Juice suggested, add Ackerman to the system by altering the geometry of the bellcrank (or servo arm) at the servo end? According to Juice's diagram this would be accomplished by moving the connection point FORWARD of the "hinge point" (in this case either the rotation point of the bellcrank or the center post on the servo itself).

Bill, could you clarify your objection a bit more?