On my 33% Cap, I replaced the JR 8411's with Hitec 5945's all around. This allowed me to remove all Matchboxes, thereby removing extra sources of potential problems. With careful programming of these servos, they end up perfectly matched. I since had hundreds of flights with no problem until last week-end when the engine quit in a torque roll, and I lost the plane. These same 5945's will go in my new 33% Extra. They are great servos. I am not prejudiced: I have Futaba 9152 in another GS plane.