Grade II winner Jump Start, who underwent surgery because of a leg injury suffered in the Bessemer Trust Breeders' Cup Juvenile (gr. I) last October, has arrived at William T. Young's Overbrook Farm near Lexington. Overbrook official Ric Waldman is looking at a March 15 date for the 3-year-old son of A.P. Indy to begin his stallion career for a fee of $5,000 live foal."He's being hand-walked now, and will be turned out soon, but we're still being cautious with him," he said about the Overbrook homebred. "He is extremely well booked."Jump Start, who injured his left front leg during the Breeders' Cup, was retired with two wins from five starts and earnings of $221,265. He won the Saratoga Special Stakes (gr. II) and ran second in the Champagne Stakes (gr. I), His dam, Steady Cat (by Storm Cat), was graded stakes-placed.