I converted a Kadet Senorita (same plane but sized for a .25 engine) to a tailwheel design. I used a secondary pushrod to control the tailwheel. One servo controlled both rudder and tailwheel. The tailwheel control horn was on the opposite side as the rudder control horn so I put the tailwheel pushrod on the opposite side of the servo arm. I used Sulivan Gold-N-Rod for both rudder and tailwheel on this plane to simplify the construction. Things can really get crowded in the tail cone with three balsa pushrods.

P.S. It worked flawlessly!