H9 Cap 232 1/4 scale?
Caliber30-
First of all, GalenB is almost correct about the CG. Weight x Moment = Arm. Moment is the distance from CG, Arm is the amount that weight will affect the CG. In GalenB's example, 2 oz 10 in from CG gives an arm of 20 oz-in, whereas 5 oz 2 in from CG gives moment of 10 oz-in. This being said, 3.2 oz 30 in from CG gives moment of 96 oz-in. My nose weight is on my motor mount. Assuming yours is too, that is 12 in from CG. 8 oz 12 in from CG gives moment of 96 oz-in. Assuming you move your servos exactly to the CG, you will be able to take 8 oz off of the nose.
Anyway, I fly mine with CG at 5 5/8, and I can spin, flat spin, inside & outside snaps, lomshavoks, knife edge loops, anything you can think of.
By the way, I can hover my Cap at about 1/3 throttle with a Saito 1.80, APC 16X8 prop, Cool Power 15%