McFarlane Avatar Banshee Jake Sully & Banshee Deluxe Playset 18 cm

Any tips for getting the stand ball in?? I've been struggling with it for a while now. I've tried using a hair dryer to warm it up first with no luck.

Can the mouth close?

Is this set the same as the two products that are sold separately? Or is their somthing different about this deluxe set compared to the individual set

Will the reef battle jake sully fit in the mega banshee alright? got him as a gift and want to make sure he fits on bob before purchasing.