Need noob help with modelling

Hi guys.


I basically took a skin, and modified it a little bit(To be precise, an LSPD uniform already modded). I added a taser, a new gun, and a flashlight from other mods that already had all this, and imported the taser and the gun onto the skin and added all of them together.

Everything went perfect, I went IG and all the textures matched what they needed to match, everything cool except one thing

When my ped walks, like the gun also moves weirdly, and also the flashlight. Like it's blobbing/moving around altogether with my skin, it's weird.
I tried to change weight(or something like that) in 3ds max while selecting the vertices for the weapon, taser and flashlight. Basically I chose all of their vertices, and then went through every bone, and changed the weight to 0.0 .

I don't know if I was supposed to do that, but apparently it made it worst, lol. Now like the belt dances around when I walk, so I don't know what to do.

Thanks in advance guys!