Wedgefield, following the delivery of Roy Hill's 1196 new GA type CCK138 model waggons, they were stored in several site whilst awaiting for enough track to be laid to allow delivery onto rail. GA2077 end view showing fixed end, only the even numbered waggons, or control waggon, has an uncoupling lever, the odd numbered, or slave waggons do not. March 14. 2015.