Shifting Wing
When the wing shifts an inch, the shifting weight of the wing shifts the CG by a fraction of an inch. That fraction of an inch is the ratio of the wing weight to the weight of the whole plane. That fraction of an inch represents some percentage of the wing chord which depends on the chord’s actual measurement. That shift in CG is in the direction of the wing shift.
When the wing shifts it shifts the position of the wing chord by an inch. Since the CG is referenced to the chord before and after the shift, we must take that into account by adding or subtracting (depending on the direction of the shift) the percentage of chord that one inch represents.
If you specify the wing chord, the weight of the wing and the weight of the whole plane, I will run through the calculation for you step by step.
BTW you can tell when you have arrived by the feeling of acomplishment if you are an explorer by temperament.