Mine is at the other house so I cannot go look, but if you'll check the Acuity thread in the F3A forum at RC Groups, Andrew has answered a number of questions about the model one of which is CG location. He posted some pics of where it's at and it is picked up with the hatch off at the CG line. IIRC, it's 1/2" behind the former which crosses the fuselage above the wing tube.

Hope that helps.