Related Clues:

• Conserve
• Undirected session
• Hot track
• Copier clog
• Obstruct, as a copier
• Bases loaded situation, for the pitcher
• Ad-lib, musically
• Preserves, perhaps
• Sandwich filler, sometimes
• Driving headache
• Sticky situation?
• Commuter's woe
• What 20-, 37- and 53-Across may do
• Sandwich spread
• Play with friends