A quick update. All major structures are built, and the upper wing is joined. It ain't perfect, but it is close. I have ordered 4 new micro servos and have the build on hold till they arrive. I have cut the rudder and elevator as required for RC, and given serious consideration to the installation of ailerons. The problem with ailerons is that the lower wing will require serious attention to construct a trailing edge and then a leading edge on the cut off piece which will form the aileron. The suggested method in the plans won't work. It has both edges flat and vertical, which means no travel. Anyway, I'm thinking I'll buy aileron stock in balsa of the approximately appropriate chord. This will simplify the joint and halve the number of "edges" I have to build.

So there's not too much I can do until the servos arrive. I need them in hand to make mounts and determine the best locations for them. Once I have them I can check approximately where to put them for weight management. I can glue on the silkspan on the upper wing and tail surfaces, but can't cover the rest until I do the servo install.