Possible Clues:

• For the present - Gee! - it's one foot short
• Genius is present
• Goes in for trade tips from Grant
• Offering
• Special ability
• Gas fitter drops rates for the present
• General ill feeling troubles leaders for the present
• Present capacity
• Traditional 61-Across surprise, aptly boxed, and spelled with the only four letters of the alphabet that don't appear elsewhere in this grid
• Partygoer's purchase