Not sure if this is just my figure or not, but i noticed that my deluxe prime Bumblebee has very loose arms. do your prime bee figures have loose arms?
One of the shoulders does on mine. It just wants to spin around. Havent tried a fix yet since its not as simple as a loose ball joint.
If you move the gray bicep piece down from inside the wheel, and then close the shoulder it creates a ratcheting effect against the shoulder.. But mine never stays
The right arm on mine is a little loose, but it's not loose enough to where it can't support something light (like the gun from a WFC Bumblebee figure).