[Help]Adding custom drops

aiight so im working on adding custom drops, but is there any way to add items without using the grades... cos im getting 59 weapons mixed in with heroic 1-15 weapons and so on...
thank in advance!

You can change the grade of the weapons you want to use, makes life easier. Example: Set your 1-15 weps to 500, and your 59 weps to 700

where in the DB can i do this ?

In your server files you will find a Item Create Sequence file, also you need to change the grade of weps in your ps_gamedefs(?) or whichever db it is that has the item table. It's been awhile so I don't remember names off the top of my head lol.