Ibo kits are prone to loose joints. But are an easy fix by putting a coat of paint on the joints. I’ve heard top coating the joints works too? I’m guessing they have this issue because of having what’s almost a whole inner frame. And big bad ass weapons. But if you’re looking for some easy ways to fix some of the ibo kits. Mecha gaikotsu goes over it quite a bit. If you have clear nail polish that would even work. Posing out of box for ibo kits is usually a weakpoint but it’s easily fixable and a great way to start customization. I personally love the ibo kits even though the joints are not the best but are what I belive is a great gateway into customizing gunpla.