i havent done this to this model but it would be the same. if you are converting it to an eletric a single servo might be a better choice as far as weight goes.but if you have the alerons and covering removed the conversion is simple.just use some light ply and 1/4 square balsa to make servo trays in between the wing bays on equil distances on either side of the wing,usueally about 4 bays out or middle of each side of wing.you will have to make holes for the servo wireing if there isnt access through the ribs.i would use smaller servos due to weight.i did the same thing on a 4star 40,and pt60.both were glo fuel though.