Epperstone’s George Gamble reaped rewards last weekend in the Porsche Carrera Cup GB at Knockhill in Scotland, writes Paul Horton. Gamble had his best result of the season so far in race two of the weekend where he took a light to flag overall win, adding to his fifth-place finish in race one, in rounds 9 and 10 of the series. Gamble was back on track after a tough encounter two weeks ago at Croft where he crashed out of the first race. Gamble was in Scotland early last week. On Wednesday he completed four test sessions that went exceptionally well, taking three second places and a fourth spot…