I know you can remove weapons from Zone Source > dlc3_code, and obviously the zombiemode_weapons and dlc3_code in my mods map files, but where else can I remove weapon/fx files to make as much room as possible for my extra guns and FX?

I have found that i can add way more weapons into my maps by doing this one simple trick. (Avoiding 400fx error) Rather than putting

weapon,sp\WEAPONNAME

into your mod.csv, try putting them into

zone_source\nazi_zombie_MAPNAME.csv

I don't know why this works or if it will work for you but it worked for me and is something you can try 

I have found that i can add way more weapons into my maps by doing this one simple trick. (Avoiding 400fx error) Rather than putting

weapon,sp\WEAPONNAME

into your mod.csv, try putting them into

zone_source\nazi_zombie_MAPNAME.csv

I don't know why this works or if it will work for you but it worked for me and is something you can try 

Thank you! I will deffienlty give this s try! So does that mean I don't need to put any weapon names in my zombiemode_weapons or dlc3_code?

No, you will still have to add that too. Add in zombiemode_weapons, dlc3_code, and zone_source/MAPNAME. I believe you will have to compile your map every time  you make changes/add weapons with this method.

it would be much safer to just use ignore files

Otherwise your gonna lose track pretty fast

it would be much safer to just use ignore files

Otherwise your gonna lose track pretty fast

Lose track of what? What is unsafe?

Lose track of what? What is unsafe?

directly editing the files in zone source shouldn't be necessary

Just create a ignore file, list the FX you "do not want" the mod to load, and it'll free up the room you need.

If not your gonna miss things here and there and potentially get mixed up on why things break. No-one here will be able to help you if you get into that situation because no-one will think to point you there.

You can do it, but i wouldn't recommend this way. That's all