$80 · RC WW1 Biplane Balsa Project with Electronics

I have flown this airplane. It needs a little tiding up and a rudder servo which works but noisier. Electric motorized. Comes with a Spektrum full range receiver. Just getting out of the hobby. Anyone with a bit of modeling experience would be able to replace the servo. I probably have one you could have. I travel to Victoria and can bring it with me.