Thanks for all the info Scott.I don't want to take over Matt's thread but I will say this. I am considering doing a scratch built 1/4 scale Fok 3 and I manufacture this plane in plastic in 1/24 scale. I don't think I would bring the model as documentation.( Although it would be a hoot to have a 1/4 scale pilot standing next to the plastic model with a transmitter in his hands) I have the luxury of much documentation because of the research I did to produce the model and if I were a judge I would favor acceptable documents over anyone's 3d renderings. Whatever, direction I take, I will remember the lesson I learned when I was competing with scale plastic models. ...Quit when it's not fun and build for yourself and not for the judges.