I am hoping you are correct about the servo. This was a suggestion by someone else based on how he set up his '27'-though I don't know the facts how he did it. Some have put the actuator arm directly on the pivot tube. I have put the arm-or actuator- on the rear (like the full scale) of the taileron. This where I calculated the 'mass balance' point to be. The effort to move the surface that way is extremely light. I plan to 'imbed' the 'T' in the ply(1/8th light), make ribs, top and bottom, drill some lightening holes, and skin them with 1/64th ply. That stuff soaks the CA well and is tough as nails. The LG has taken me so long to design/buildthat it has slowed me down. I am building some 'scale' working disc brakes for it and have the rotor built and the caliper about done. The piston turned out to be easier than I thought. I use a short piece of 3/8th alum rod turned to hold an 'O' ring. So far it takes very little air pressure to make them work. The 'pads' have yet to be worked out. I am thinking of using some RC car pads to try, thus far I've tried sandpaper glued to the press plate to test the theory.