This Combat Models A-10 is a joke, even with 30 oz of lead, a large JR 1300 mha battery, and all servos mounted towards the front, the cg is still to far aft.
I'm thinking about mounting the engine in the nose, it will kill the looks but it should fly good.
To bring the plane in CG (2.5" behing the TE, I added so much lead that the plane will exceed the wing loading. With the plane in CG it weighs 8.6 pounds. Way over weight!