Final Coil of Bahamut Loot Tables

[Magnesium02]

But there is only 7 more pieces than SCOB and 3 pieces more than the first coil

1-5 = 70 pieces
1 = 17
2 = 17
4 = 18
5 = 18

6-9 = 66 pieces
6 = 16
7 = 16
8 = 16
9 - 18

10-13 = 73 pieces. with 10 weapons it should logically be
10 = 18
11 = 18
12 = 18
13 = 19

Having 22 pieces in turn 10 means that the later coils will have less loot (like 22/18/14/19). And that will imbalance the drop rate of certain items so items in turn 10 have a 9%(1/11) chance and items in turn 12 would then be 14%(1/7)