Luke has set some numbers of items he brings, and the raw material files set the number of how big a stack is.

luke has set the number of items in the list is divided by the number of the int _itemCountScale. i am not sure how he picked up his number but it will be divided by =8 at begining and will be divided by =1 towards the end. the goal there is to get very few items 1, 2, or 3, at beginging.

the raw material files will decide how many items on the stack, that one it is us who choose, and that number will be divided by the number of int _itemStackScale. at begining of the game, if we say 1000 in the raw material file, it will be divided by 8 and the each stack of this item will be 125. later it will be divided by 7, 6,5... and you will get 150... 333...666.. 1025... etc

i said divided, it is maybe possible the mathematic formula is a little more complex than just divide but thats the idea.

so if you want you can put 6,5,4,3,2,1 and the other column 6,5,4,3,2,1

but there is always a thing though:

at start of the game, probably Luke decided it was 10 and 10 and when we hit int _population = 30 we start to hit that 1st change. ( 8 and 8 ) so maybe the first 1-29 population, even if you put 6 and 6 ... maybe you will see no difference.