TM MWS mags won’t accept gas

My 3 new MWS mags spew gas out of their fill valves when I try charging them up.

I’ve loosened, tightened, and removed the valves in an attempt to look for obstructions. I have a hard time believing that I’m 3 for 3 with shitty mags. It’s probably just user error.

I’ve included a video of the 3 bad MWS mags compared to a working mag. Any suggestions would be greatly appreciated.