Nicely done w8ye. Beats having a mini-servo mixed in with the rudder. Just may upgrade mine to use your technique. Yea, I know - if it ain't broken ... (but that's me - just ask my Ex.
). A small strap fabricated from an aluminum can that wraps around the bottom of the rudder to capture the "music wire" and secured under both sides of the rudder horn would work. Good ole technique stolen from The World Model's Sky Raider II.