Ken,
I looked up that plane at tower and it says:
Wings: Two-piece wood. May use one servo per wing if using .60 cu in (9.8cc) size engine. Larger engines require two servos per wing.
Any idea why I would need more servos to use the bigger engine? With 4 wing servos, 1 throttle, 1 rudder, and 1 elevator I'm at 7 channels already. Not really a problem though since I bought a 9c, but would still like to know the reasoning behind it.
schu