I used Futaba S9650 minis on all the control surfaces except flaps which called for a full size servo. Flaps are Futaba S3071HV. I have a Hitec micro on the nosegear door. An S9650 on nose steering as well. As you well know, the plane comes with servo mounts already set up and drilled for the recommended servos which are unobtainable JR servos. All of the mounts had to be enlarged for the servos I have used.