An important fact to take into account is that as you get higher performance airplanes you have upper limits of control throws that the plane will accept(by way of higher performance I mean more then a trainer) Some planes will snap when you have too much control movement, because the surface will stall. This is very disconcerting when it happens the first time and it usually happens at slower speeds and if you are really unlucky during a landing. Just be aware that when you are playing with throws and cg points that you do your experimenting up high and if you have dual rates you might want to program the low rates to be at a known safe condition.