>>7100766I don't have my bee with me right now so I can't check, but I do believe that the geometry of the helmet should limit the mask's ability to flop forward when properly tabbed down. On my copy at least, you can feel it snap into place. The easiest way to tell if it is sitting crooked is to look at the bottom, the point should line up with the groove in his chin.
As for the joint I was referring to in case it wasn't clear, see picrelated. Just so you don't accidentally damage your figure because my description was bad. It should be obvious if the friction pegs aren't sitting as deep as they should.