The trim is a joke, IMO. You can trim level until close to transonic, then there's not enough trim... but you can activate auto pilot, which levels it out... makes little sense to me.
Furthermore, the trim adjustments are too large, and you end up oscillating... unless there's a trick to it I don't know. Suffice it to say, it's not an enjoyable experience. I wish it was more like trimming the F-5... just enough to let you know it's not a fly-by-wire plane, but not so much that it's fricken annoying.