Drop custom weapon enhanced

Hello, I have such a problem. I use the Custom Weapon and Custom Armor plugins. What happens to me is that the player can find weapons in the loot that have no Itemperk, but in addition it adds weapons to the loot that should not be given, which are special, such as the M249 with 2x dmg and various other things. In my opinion, Itemperks should only add vanilla weapons to the loot and crates. I have been solving this error for many months and from the side where I thought there might be a problem in the loottable plugin, it was found that there is no problem there and the only place where there could be a problem is only itemperks. That's why I'm writing to you if you haven't managed to find out why this is happening or so. Thank you.

ok I'll ask, thank you