[Updated]Invisible AMFP meshes? (And Other Questions)

[DeAngelo]

I've been in the process of going through my AMFP assets to see if there's anything I want to use in my CS. I'm doing this because I read on here that most AMFP ent files won't work right so you need to import the mesh and make a new .ent. Problem is I'd say about 70% of everything I import is either invisible or has invisible parts. Highlighting the empty space shows a wireframe of what is supposed to be there. Is this normal or is there something I'm doing wrong?

(Example: I want to use the pigline grinder blades for a scare, but when I import them only the blades are visible, not the spindle. Looking in the ent file points me to something called grinder_spindle_01 as the submesh but that file doesn't exist anywhere in my AMFP folders.)