David,

Thanks for the thoughtful analysis. You were correct in your assumption that the retract servo will be forward and the flap servo aft. I'm using a Hitec retract servo which has a "short" case... only 1" deep. The entire servo will be below the top wing skin. The flap servo will, of course, protrude above the wing skin. I currently have a 2" piece of fiberglass tape on the wing join seam and a 6" wide piece over that. The 6" piece is automotive glass and didn't specify a weight, but I believe it to be roughly 2.0 to 4.0 oz cloth. I pulled the wing retract pushrods out after determining that I could get them in again when I needed to.

I will put the flap servo in, in-line and parellel to the retract servo as you suggested, leaving an area of undisturbed glass cloth between them. I'll let you know how it's going as I progress.

Thanks again,

Greg