Proving, once again, that he can train --- and win --- with anything which has four hooves, a mane and a halter, Hall of Fame conditioner Jonathan Sheppard picked up a rare score over timber on the undercard of Saturday’s Carolina Cup.The part-time Camden resident gave Darren Nagle a leg up aboard Bill Pape’s Nationbuilder, which made it 2-for-2 over timber fences in winning the $20,000 C.P. and Edith Wills DuBose Cup, a three-mile journey around figure-8 shaped layout in the middle of the Springdale Race Course.The Augustin Stable-bred 9-year-old beat Irv Naylor’s Saluda Sam (Willie McCarthy) to the finish line by 6 ½ lengths with the Tom Voss-owned and trained Farndale (Kieran Norris) coming home third. The winning time was 6:14.After having worked his way into the top echelon of steeplechasing, including a third-place finish in the 2011 A.P. Smithwick Memorial at Saratoga and then, coming home third in last May’s $150,000 Iroquois (Gr. I), Sheppard converted Nationbuilder into a timber jumper.