Hmmm... lots of Bobcat owners are running each elevator half on a separate channel... so it seems to me that if someone wanted to prove that a single elevator-half working is sufficient to have a fair amount of control of the aircraft, it would not be all that hard to set up a swicth-activated mix such that one elevator half could be temporarily 'turned off' for testing purposes - then turned back on if necessary to save the model... ? This would leave the inactive servo in a fixed position, rather than flapping around as might be more realistic - but might nevertheless provide some level of feedback about the effectiveness of a single elevator half.

Just a thought.

Gordon