Possible Clues:

• Proficient in soft-pedalling during turn
• Just a bit of business for the expert
• Having the required skills
• A section downsized with skill
• Expert produced a warehouse lacking nothing
• Bit of business that's not for the novice
• Completely skilled
• Plug old record not, ultimately, up to much
• Person who is very highly skilled
• Note former record time under a skilled performer