Just thought I would get someone to help me with setting up 4 aileron servos on a biplane. I do not want to use Y's. I am using an Airtronics SD-10G transmitter. I tried to use the "Procedure to obtain DUAL AILERONS in each wing of a BIPLANE" originally written by Jack R Albrecht, Airtronics Technical Su[pport and revised on 29 June 2010. Everything Jack wrote about this procedure worked up to the point of activating the Snap Roll Function. At that point, only the lower wing aileron servos worked while performing a snap roll. I have tried just about everything I know to do to get ALL 4 wing servos to activate in the performance of a snap roll and so far have not been successful. Failing to get helpful information, my next step will be to use 2 Smart-Fly Equalizer II units. Any suggestions would be appreciated. Thanks in advance.