I was at the field one day when a friend brought out a Cermark Pitts with (2) standard Futaba servos in the ailerons. 3002's or something like that. Both servos stripped out in flight. The plane was saved with excellent thumbs on the rudder and elevator, but I finally became convinced that metal gear servos are the way to go on larger or high performance planes. The Cermark Pitts is smaller and lighter that the G/P.

It's your plane. What's peace of mind worth?