Charlie,
My P90 was initially setup 0-0-0. It flew good but floated forever during landing. Had to fly it all the way to touch down. It would stall just above the runway if you tried a idled down slow landing. I modified the top wing with -2deg incedence and turned it into a whole new plane. Lands like a trainer and does very slow speed aerobatics effortly. Mine is powered with a saito 120. Just an FYI on the incedence.
Edwin

Almost forgot, four ailerons on high rate are MUCH better than two.