Garth:

I see no reason why it wouldn't work in your WACo, provided only that you pick servos that are both strong enough and thin enough to be fully enclosed. Then you can use scale links from the lower ailerons to the upper.

And servos in the lower wings will help the balance, and the wiring will be easy to conceal.

The one thing I will still do, though, is install doors for access.

Modern servos are very reliable, but the minute I have them fully enclosed some nasty little problem rears its head and I'm cutting into the wing. Having the door, making access trivial, I never have a problem. Murphy knows all.

Bill.

PS: I also would not build that plane with only one aileron servo. wr.