With regard to the shafts, I may wind up with steel, and may even go to larger ID bearings. I'm starting with 3 telescoping thicknesses of brass tube. The idea there was to solder a perpindicular piece on the end like a 'T' so there is no movement. I could, of course, weld steel but it would be more difficult to have bolts/screws. Right now I'm wrestling with how, or whether, to gang 2 servos together for each taileron-and getting the rudder servo(s) in there too. I like things to 'bolt' together rather than rely on glue for high stress parts. I have considered using all my electronic gear for the fun of it to essentially build a UAV. Have color cam Tx/Rx, a BTA-06 auto pilot and the PDC10 device which couples to a a gps into which you program waypoints. Of course with a 6 minute fuel supply you ain't goin' too far! I like the electrics and certainly the EDF's have come a long way recently. I've seen your site before-very nice planes. At the same time, I am 'finishing up' a Skyray and 4 prop jobs- 2 seaplanes, a Cub and a Storch. Man's got to have his priorities in order!