Sounds like the standard response (and essentially true for any aircraft or aircraft model). And of course it still doesn't address the "glide angle" issue. Besides, I don't think this was a simple issue of elevator sensitivity. This felt like a seriously tail-heavy model, one that was balanced slightly nose down at 138mm for its maiden (as per the instructions as I read them).

Although to be fair, I'm sure it was both. I have 25% exponential dialed on on the elevator. Maybe I need to bump this up to 50% for the next flight.