3D armor broken with new update

I need help badly before i lose all my sanity. I have created textures and models for each 4 armor pieces, and I put everything EXACTLY where mcreator tells me to, and yet it doesn't work as it should. Every single model is floating somewhere above my character, the leggings have replaced the helmet and are stuck INTO MY SKULL, my helmet has gone missing, and the shoulder armor bits are separated from the main torso. Did I mention that the boots are in my left kidney, and that everything else is hovering over me? how on earth do I fix this jumbled mess, please help me.