3D,

Is this for the YAK? I used the SWB 4" with the curved ends on mine, works fine. Also, cross the cables. Love the SWB servo arms, put them on all around on my KMP Yak. 1 1/2" on ailerons and elevators, and 4" on rudder. I've had other arms vibrate loose, even with loctite, not these! Hurry up and get that thing done!!!!

Tim