FWIW, my Yellow F-15 and my 1st isobar both had Matchboxes on the Elevators and both flew absolutely perfect with no trim adjustments. I've read a couple of threads about people saying not to use matchboxes on primary control surfaces, but the thing was designed for any control surface, so in my mind it's got the same likelyhood of failing as an 8411 or any other servo.

That being said, nothing beats just buying a reversed servo or sending one in to get reversed. Some people do it themselves, I just send it in. As far as ganging two servos together, in my experiance, the matchbox is bulletproof.

my .02

Sean