Destral

 

It may help the mask stay on if you attached it to the other side of the stand (the grey thing should hold it up).

Actually, I've already replied to this a couple of posts ago:

 

 

I think the mask is attached to the display wrong. The gray piece is meant to be inside the mask to help hold it up. 

Actually you're wrong. Not only the instruction says to place the piece outside (look closely at the 9th picture), but this piece is also doesn't hold anything up. I tried to place the mask the way you've suggested, but it doesn't work well.

I think that the grey piece just imitates the eyestalk.

 

 

 

Interesting that the grey piece is faced the opposite way from the MoC stand

Try doing this:
 

It's worked wonders for my MoC stand