Poured lead shot/epoxy/microballons slurry into aileron tubes and checked balance. I may have to pour more lead shot into opposite end of aileron tubes after paint. The instruction say to leave about 14" when injecting foam for pouring lead shot in root end of tube, but that's not enough.
Temporarily assembled roll servo on bracket to determine position of tray and bracket. I am using Dynon servos, they seem to fit well. I will need to purchase proper drilled-head attachment bolts. The instructions and parts seem to be more geared towards Garmin mounting.