King’s Lynn Town have been dealt a huge blow with the news that striker Jonny Margetts is facing 10 weeks on the sidelines. On an afternoon when the Linnets picked up a second successive goalless draw on their travels at Hereford, manager Adam Lakeland broke the news after the final whistle in the west country. Margetts injured his back when he collided with a post during Lynn’s home defeat by Curzon Ashton at the Walks. He missed the FA Cup win over Cheshunt as a precaution and many expected him to feature against the Bulls. Addressing the club’s media, Lakeland said: “As we all know, he got …