Random Spawning Items in L4D2

I’ve been working on my L4D2 map and it’s nearly finished but there’s one problem that has been bugging me.

The random item spawns.

I have plenty of items here and there, all in their own little groups and such, but for some reason they won’t spawn by random, I never had this problem when making L4D1 maps, so what’s the deal?

Also, yes " must exist " is not checked.

Sorry for the bump but nobody knows a fix for this? It’s quite frustrating.