FMS Red Dragonfly Operating Instructions Manual page 72

In the ailerons, the rods are attached to the servos (figure 22, item 1) in the rudder horns. The other end of the thrust
rods has clevises (2) that can be adjusted in length by turning.
To adjust the linkage rods, push the retention ring (4) a little backwards and disconnect the clevis from the rudder
horn (3). Shorten the rod as required, clip the clevis in again and secure it with the retention ring (4).
Figure 22
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