Got a set of these a while back off the club and today decided to fit them. Problem is current plugs, Champion H10C, have a removable terminal so that the lead clips onto the threaded portion. when terminal unscrewed off. The H10C from the club are the solid type with no removable portion. So obviously I cannot use these plugs. Surely others must have had this problem. Mind you I cannot find a picture of an H10C with the screw bit removed. Am a bit confused.