Instead of changing index in the existing weapons duplicate them with altered index and add only the new weapons you created in your kit to be sure they don’t cause the issue in other kits that can be used on the map. If you created new kit you want to use rather than editing existing one, you need to load it in the tmp.con or init.con in your map folder, I’m not sure, check how it’s done on other maps (those files are in the server.rar)

Im really sorry to bother u this much, i understand what you're saying i did bind smg's and mg's such is beretta38 and mg42 to ''-i7'' and changed them in few kits with ''mg42bipod-i7'' (it was the only weapon with index 7 in the kit) started map got to 15% and shut down. Btw thanks for the info i'll try different number or get more info maybe that's not the only thing that has to be changed for it to work, anyway have fun its gonna be a cool day! Arigato. (no need to reply)

I'm not sure what are you trying to achieve, but weapons can only have 1 index to work, separate tweak file technically means a separate weapon, which usually is a copy of the existing one only with altered index (Index is weapon slot in your weapon selection menu). For example, side arms like pistols have index 2 by default, but there are also -i3.tweak files for alternative version of some of them, to be used in a kits where pistol/revolver is your main weapon (mostly AT kits). For example, in the bazooka or panzerschrek kit, your side arm is weapon #3 (index 3), but support class with MG will use other tweak file with pistol being weapon #2 (index 2). If you create a kit in which there will be more than 1 weapon referring to the same index number, your game will crash.

Forum is nearly dead nowadays, it's better to ask stuff like that on our Discord where more people hang out.