Man chuck, that is about the best explanation I have come across. I have found that some airplanes will wingtip (knife edge) spin like crazy if you run "spoilerns"! And my sledge will flat spin a lot flatter with the flaperons turned on! Spoilerons also make waterfalls tighter, on all my planes except the burrito. And for some reason that burritto doesn't like spoilerons to waterfall?