There a few things not exactly scale with the Sopwith pup. I made complete modifications on the plane and even ribbed stitched the wings for accuracy. I entered in a scale competition and heard the judges say the Balsa kit was not true scale during the judging process. As they stared at the plane, they couldn't figure out where the inaccuracies were, so I figured they realized I made proper changes to the plane. Well, when I got my static score, I realized what idiots I was dealing with. I later asked them about the low static and their comments were that they heard a Balsa USA plane was not true scale and therefore the downgrade. I made changes to the cabane struts and also put the flying wires in their correct places. Which meant some actually went thru the wing and connected at the bottom of the fuselages. Its been too long to remember much about my modifications, other then we had a blast of a time flying it. The plane is definitely a crowd pleaser!!!