Here is the mounting material we talked about in class.
You can use this material to mount your prints rather than spray mount.

Grafix Double Tack Mounting Film

http://www.dickblick.com/products/grafix-double-tack-mounting-film/

Here it is at Utrecht where they have packs with multiple sheetshttp://www.utrechtart.com/Grafix-Double-Tack-Mounting-Film–Archival-Acid-Free-Permanent-Adhesive-MP-23205-001-i1016236.utrecht#!prettyPhoto