Manager Jake Leberl wants Dover to enjoy a strong FA Cup run. Whites take a break from Isthmian Premier action after an encouraging start to theirleague campaign when they visit Isthmian South East Sittingbourne in the first qualifying round this Saturday. Leberl was then-boss Chris Kinnear’s No.2 when Dover reached the third round in 2014/15, losing 4-0 at home to Premier League Crystal Palace. That run aside, the club haven’t had too much FA Cup success in recent times – something Leberl is eager to put right. He said: “It’s a really difficult draw and a really difficult place to go. “Ryan M…