you can always change the boudary to the size that you want.
Right click view border->boundary->set this to manual rectangle. Drag a manual border around the objects that you want.
this will resize the border. and maybe will take less draging of your views.
normally the border is as big as the geometry thats inside of it.
Occasionally there is a piece of geometry "lost in space" - you might want to try part cleanup, or something else to try to identify if there is something in an unexpected location.
Production: NX10.0.3.5 MP16/TC11.2
I'd rather be e-steamed than e-diseaseled