Glitched enchant items

Hello there. I got a problem on my server.

The level 60 enchants are Osmium, Kevlar and Osage Orange. But only Osmium drops.

I checked mobs, set to drop. Items, set correctly. DB, same.

I don't know if it got anything to do, but when I buy it from Item Mall, it got 1.9k HP and a few OJ. Same for Osage Orange.

Any fix?

Make sure about their grades as it must not be above 255, mostly this is the issue on this kind of situations, as well you need to take into account the droprate depending on the itemorder that you set the items up on the mob.

The grades aren't higher than 255, and what do you mean about the droprate?

adding the drops to mobs? <.<

I said that I checked them...

Droprate changes it's value depending on the itemorder, as if (I don't have the exact values right now, so bare with me) itemorder = 1 droprate = 100 would be 100%, yet, if itemorder = 7 droprate = 100 would be around 2% get it?

As I mentioned, those values I provided might be wrong, as I don't have the table with the exact rates on this computer.