Possible Clues:

• Final parts
• Hindmost parts
• Concluding parts
• 'Thanks I does not give, perhaps, at last (4,4)'
• Final parts, and what this puzzle's circled letters create
• Closing parts
• Last bits, fancy details -- any number to be filled in
• Is prone to cover up trouble in final sections
• Rears
• Perhaps right Charlies feel sick in inclines