Have you tried calling The North Face company? I am sure that The North Face company will either have the replacement piece or can at least lead you to where the replacement pieces can be purchased. If not, maybe the jacket piece was defective and The North Face company might be willing to compensate you with a new jacket. That's about the only thing that I feel might be worth trying.
Hope I was helpful.
Good question for STP's Customer Service department. I have no idea!