possible evil box glitch?

Honestly, after opening around 50+ boxes in a day i was still getting Chaos Scrolls, Acc ATT scrolls, Special Pot Scrolls and AEE, all rather late on, the first couple i had that day were Accessory Dex scrolls and a 2-handed weapon ATT scroll. Towards the end i was getting a lot of potions, but i feel thats mostly because i was getting so many boxes and was bound to get some eventually, not some weird coding thing.

So i dont really see what you guys are seeing.

Though i suppose it is possible considering that the boxes are already coded to some degree to give us items which are useful to us (Apply the same thing to Gachapon Nexon.)

from netto's 30 box list:
chaos
acc magic
1-h magic
acc magic
special pot

from modular's 40 box list:
acc att
chaosx3
2-h att


It seems like my 2nd theory is correct then, you get 5 premium items a day, or the amount close to it,4-6. Don't expect more than that much a day