Hello, I'm wondering if anyone knows if the difference between the head of the golo 5 and the head of the golo 5 dual balance are different. I know there is 100 extra grams in the Dual balance. I know 50 grams are above the hands in the shaft. My question, is the extra 0 grams in the head, or in the shaft closer to the head. If I took both shafts out, would they be the same weight (not accounting for removable inserts).