For what it's worth, on my extra special after reading threads warning about potential tail heavy problems with a DA, I put both choke and throttle servos inside the motor box. Just glue and screw two hardwood rails inside the box at the appropiate heights. Old style DAs will require placement near bottom, new or updated DAs will need them toward the top. On my fifth or sixth gallon of gas through the engine, no problems with the servos.