Fma helmet set up

[Rowed]

Ok so I'm just starting doing my helmet set up , got a few questions firstly it's an FMA maritime model.

 

Just arrived today the nvg mount is ever so slightly lose might just be me but I am ocd like that but can't see anyway of tighting it up apart for the top one which is like countersunk from the inside can't see acces to the other two ...

 

Also iv got a fma helmet cover which seems slightly baggy at the sides where the rails flatten out at the top any ideas I might just Velcro the middle part down hoping it might help.

 

 

I'll pop some pictures up tomorrow if it helps