iPhone LCD will not close with housing after battery replacement.

I’m having trouble trying to close the LCD on an iPhone 6s repair. The battery was replaced and the internals were cleaned. It just won’t snap back in, I am feeling resistance right in the middle of the frame. I don’t want to press too hard, but even with some force, it’s just going back in, I checked and there is no blockage and the tabs at the top are in place. I’m really stuck.