My mistake sorry, it was 0.1 on aileron and -0.3 on elevator. Oops!
Use the trim fix and set +5.5 on the trim wheel. I would try 'less than' -0.3 on elevator if other aircraft were OK with the blanket mod. With the trim fix a half second trim blip has some effect, the default setting is snail pace.
Just tried 0.05 and -0.2, it is even nicer!