Hi Richie
This brings back memories .I made one of these in 1960 ish As you know it as flaps as well as elevator . I fitted mine with a Ed 2.46 It was a great flyer you could do square loops etc. I”ve just found a good item on U tube .With a photo that you may be interested in I will get a picture and post it you will be surprised as I was.
Note i was a member of S.M.A.E
Regards Nobby