As Kathy mentioned last night, NEVER cut or tear the 11x17" folded papers she gives us with the Propers on them. It costs the choir money to create new ones because the cut ones are unusable; tape fails over time. If you must, copy the pages yourself.
Or, better yet, invest in some 3-ring magazine holders. If you can find them in a local store, more power to you, but it seems no one carries them outside the interwebs.