Quique's Yak does have 17 servos.

4 per aileron (8 total)
2 per elevator (4 total)
4 on the rudder
1 throttle

The ailerons are HUGE, like all of the other control surfaces on this plane. He was experimenting with spades like on full scale planes, but the last time I saw it, they were off (Do you call them spades Doug? I have heard people call them shovels.). It has to be seen in real life to be enjoyed to the fullest. He has so much stuff on this airplane that he only wanted 1 reciever. He has like 4 batteries, 4 regulators, 4 matchboxs, the 17 servos, and all that is routed to the rx.

He said it is the best plane, hands down that he has flown.