I just read this post after buying 2 brand new 8611a's for my AD F-16 which is under construction. I immediately conducted the servo "test" and found both servos to move freely without any binding or irregularities throughout the entire range of motion. I just had them shipped to my builder in Miami. Should I have him test them under load? Right away it becomes an uncomfortable situation in which instinct tells me to just send them back. Should I have him send them back to me and trade them out for 8411's which I was told would be enough or have him send the 8611a's back to horizon for replacement. What do you guys suggest? Also what are your opinions on the 8611a's for the AD F-16. I went for them because I figured since they will be the only 2 servos flying the plane I should get the best. (There's not really any redundancy in having only tailerons!)