https://www.servocity.com/html/hs-22...l#.V3krhxw7uCY https://www.servocity.com/html/hs-12...l#.V3ksAxw7uCY Would be picks I bet you could get a standard one in there if you wanted. The ones you put in are a little small. I have done it for mid size WW1 planes. They are too delicate even though they have power. I would never scrap a plane because of servos.