No match boxes. Nine channels used

throttle
aileron
elevator with a Y (8611's one reversed)
Rudder
Gear (regular robart mechanical) with servo
Flap servo 1 8411
Brakes (clippard momentary push button type)
Flap servo 2 (I think on this channel, again 8411
Steering servo aux 4.

No match box was necessary, although my last isobar had two.