Possible Clues:

• Adds up
• Cracks in builds on site report
• "Sounds right"
• Neuron, y'know?
• "I see"
• Tracks, so to speak
• Holds water in school behind 10 across - site report
• 'Holds water in builds' - site report
• Cracks in school after 10 across and most of 8 across
• "I get what you're saying"