So whenever I try to un anchor my model it becomes small and crunched up. I think the reason why is because I made my model big and whenever I try and un anchor it, it goes to its original size again. I removed any original sizes or original positions. https://youtu.be/CNzbMmp8KEA
This may be caused by the rig you are using having badly-made welds. What I would do is I would make a new rig using the "build rig" feature in the plugins tab and transfer the hats and other cosmetics from your old rig to the new one.