When I try to print a score, the staff names are cut off. I checked my margins but it still doesn't work. I only have 2 staves, if that means anything. Should I be changing anything in the staff properties?
I think whatmay be happening is that you are telling NWC that your printer can handle a margin that it can't.
Go to the extreme just to check. Change the inside edge to something like 3 or 4 centimetres and then try it.
Don't necessarily rely on the print preview. It may be lying to you.