Hey I have a problem with my Yamato 1/60 YF-21, can't seem to find any posts relating to this issue. When transforming into fighter mode, I can't seem to get the backpack to properly snap down near the shoulder joints. I try to snap one side down, then the other pops up, though one side seems to be looser than the other. I've checked and it doesn't seem that anything specifically blocking the top part from snapping down properly, I have the small doors out of the way, and I've tried it with