I got a bit more done on the K90. Placement of the rudder and elevator servos has been done. I'm using pull/pull on the rudder, and carbon fiber tubes on the elevators, one servo for each half. Speaking of dual elevator servos, what is the best method to connect up the two servos? With dual servos there, and dual servos on the ailerons, plus the retract servo, and possibly a steering servo, I'll be out of slots in the receiver.

Anyway, I placed guide tubes in the exit holes for both the elevator pushrods and the rudder cables. This should keep everything nice and straight, and operating smoothly. I can sight through both guides of each tube and see the end of each servo arm!