Possible Clues:

• Precisely, with "to"
• Have down to ___
• Do to ___
•     To ___ (perfectly)
• Hit from ___ (drive a golfball) (2 words)
• To ___ (unerringly)
• To ___ (precisely) (2 words)
• To___ (precisely)
• Faultlessly, after 'to'
• Something might suit to this