RE: mapping servos to rx channels, help reqd
By the way, the 7/B designation in your case means that channel 7 is normally used for the battery. If channel 7 is needed for a flight function, you can plug the battery pack and a servo into the same channel with a "Y" harness.
And the channel assignments that were mentioned above are for Futaba ( and Hitec?) equipment. JR and probably Airtronics would be different.
Dennis-