yeh-I once did a scale model of the Dalotel
Got a message from a guy -said mine was not scale -because my black outlines on rudder were blue.

He said Prettner's model of the Dalotel had blue outlines ---and Prettner's was scale.
Yeh sorta - it had an engine up front and retracts -after that -------
His flew and was flown - extremely well -but scale?