RSchrock was correct in his approach. All you need to do is increase the length of the opening by about a 1/16" of an inch and it will now support Hitec and Futaba servos. Ipanetta was also correct -- the openings are designed for the standard JR servo which is about 1/16" shorter than Hitec and Futaba.

RSchrock,

I had to do the same thing for my Ultra Stick 60. I went with (4) 425BBs in the wing,a 605BB for the elevator, a 605BB for the rudder, and a 422 for the throttle. What is strange is that my Ultra Stick 120 did not require this modification.