The other "feature" of the Dart that has not been mentioned was to do with changes in power setting. Everything had to be done gently and if it was then everything went okay. If however you were a bit quick with the levers you could generate a strange effect that was the opposite of what you expected.
Since the power levers really acted as "rpm command" levers in flight, if you reduced power too quickly, instead of slowing down you would get a sudden slight increase in speed as the props coarsened in an effort to reduce the rpm. The opposite was a more sphincter clenching moment when advancing the levers slightly too quickly for a go-around when the props went for rpm rather than power and the aircraft slowed briefly!