I'm pretty sure it's not the thrust angle -- it's 100% stock at the back and when I "punch" the throttle at low speed it briefly responds by pitching down slightly before then pitching up sharply. It looks as if the thrustline tries to push the nose down but then something else takes over and the nose pitches up very strongly.

Still a ball to fly though -- just requires a lot more attention to the sticks than other people's bobcats seem to.