Guys - a clarification. Kestas and Igor definitely *built their own airplanes* from molds, etc. They are magnificent but definitely built by themselves using very advanced techniques. Howard was joking above, these are no "parts is parts" airplane bought offshore, they are made with loving care in Southern California. Both are sportsmen of the highest order and would not have taken part in appearance judging if they did not build the airplanes.
If you want to argue they are professionally constructed, that might be a good point, I think both are employed by a major UAV manufacturer where this sort of construction is common. Although I bet the finish isn't this good!
An offline comment noted that the commenter wasn't aware of anyone in the US being able to build airplanes this way. I am sure there are any number of people who could do this (Howard at the head of the list, assuming you didn't care how long it took...), maybe not as nicely, but perfectly functional. Jose Modesto does something along the same lines, more like the Yatsenkos than a pure composite like I think these are, but also very nicely made. So people can do it.
Until otherwise proven I assume ALL the airplanes that show up at a contest are legit, and meet all the requirements of the event, or the appropriate penalty is accepted. Cheating, gray areas, etc, are *virtually unheard of* in my rather extensive experience over the last 35ish years I have been doing this.
I dug through my pictures and as near as I can tell, not only were there no "parts is parts" airplanes, there were also only a few ARFs and, in appearance judging pictures I see only one *kit*, and the rest were scratch-built. Which is about the usual mix that I see. Appearance judge Ted Fancher also noted that the quality of construction and finish was pretty exceptional, there were no dogs or even mediocre airplanes, they were uniformly well-built. There were some ARFs around, and that's fine, but no one attempted to take credit for them - which is also universally the case.
Note also that Igor was also one of the first people to explore the "ultra-low-rev" approach to 4-strokes, and that worked pretty darn well, too. I think Kestas was using a Stalker (maybe a 76?) and Igor some variety of electric.
Brett