RE: sig kadet senior
ARF has ailerons, kit does not. I built my kit with strip ailerons by using 2" aileron stock and cutting the ribs off and adding TE with small TE sheeting. I also decreased the dihedral to 1.5" under one wing tip. I also increased the rudder area by about 30%. I have flow the ARF and see some differences. I like the way the ARF flies and rolls, but the kit built plane is so much better constructed. If my Senior dies I'll start another one no doubt.
Marcus