33willys, Just thought some more about what your doing on your Elder and I have a suggestion....When I built mine I filled the last 2&3/4 fuselage sections (upper surface) with some thick scrap balsa to create a much, much greater surface area to glue the center of the horz. stab to. I didn't trust just gluing to the basswood sticks with nothing between them. Glue plywood in there if you want, but do fill that area with something to create a good, large surface to glue to. And yes, I would and did use 30 min epoxie for that. The extra weight takes a back seat to making it strong.