Hey
The astro hog is one of the best flying planes you'll ever have...just guess on the throw surfaces...just dont over do it. Its just another sport plane...no need to be critical. Dad has one for 4 years. He still has the same fuse 10 years later but a different wing . Still flys great.
Figure the CG 33% of the chord. In other words 1/3 of the wing chords total length back from the leading edge.
If your bent on specific detail email me and ill get them for you.