Boss Steve King concedes his Deal side weren’t at their best as they won at home to Cobham to progress into the last 16 of the FA Vase on Saturday. A goal in either half from midfielder Ben Chapman and forward Rory Smith, both from set-pieces by left-back Jack Penny on his 150th club appearance, were enough to see them to a 2-0 win. “I thought it was a tough game,” reflected King, who gave a debut start to winger Ashley Miller and picked James Tonkin in goal with Henry Newcombe (knee) out injured. “We knew it would be. “No side gets to the Fourth Round of the FA Vase without being decent. We h…