The is no need for strong servos for alierons the mig fly best with delta mix for the big elevators ,the big comp arf mig using only the delta mix for elevators and the alierons is not in use just little up fix deflection ,I did try to fly my skymaster f-22 with both configuration and the delta mix work the best ,so the mig will have the same mix delta for elevators + regular alierons with 15% less deflection than elevators and only 5.5 kg flat wings servos same servos for ruders ,I have the chance to look on the full scale mig -29 surface setup and the biggest think is the elevators ,all the other surfaces is use for hard air to air combat for speed breaking when the rudders go in or out flaps down and alierons up with computer assist for other maneuvers when in combat situation .