cant move the linkage its a single servo as far as engine thrust it has right thrust and a little down thrust its a 60 size trainer and it has a 60 on it i noticed a little slop in the ailerons so i might go with duel sevros iam thinking that the slop is the problem when trimming cause if i trim it to the left the slop in the ailerons the wind force is pushing the ailerons down and not holding the trim setting what do you think michael