Possible Clues:

• Very determined to have remnant of cheque delivered
• Rigid small boat in Loire, good for going around river
• Top Secret Review nevertheless gets delivered - presumably it's a tough one to shift
• Stiff-necked Bob turns awkwardly
• Mr. --, a character in the children's TV programme 'The Mr. Men Show'
• Intransigent
• Inflexible end delivered
• Determined to be delivered end first
• Hard to work reaped field the French cut or glean finally
• Difficult objections raised and delivered