ORIGINAL: az3d
I fly giant scale so maybe it is different. The cg is always around the wing tube because that is where the load distributes from. Of course that is assuming the plane is designed well.
The CG is not located "where the load distributes from." The CG is where the weight of the plane acts through. The lift acts through another point - completely different discussion. Don't assume the CG should always be on the wing tube, just like you should not assume the CG should always be on a spar. It is sometimes very close, but more of a coincidence than a correlation.
Kurt