I had a flight where in the preflight I noticed that the elevator would only move down and not up. I wasn't sure if this would be an issue, but on take-off, it wouldn't pitch up with my yoke or with the autopilot set to FLC @ 105 kias. I reloaded the situation file and it was corrected. I'm not sure if this is related to what you were experiencing. BTW, this was in the O3, which is awesome!