I have a new XCR in 7.62X39. I haven't had a chance to get to the range yet . I've dissassembled and lubed it and I've been handling and dry firing it. My problem is that the bolt hold open doesn't catch and hold the bolt most of the time. I push up on the bolt hold open and retract the bolt, and when I release the upward pressure on the bolt hold open, the bolt goes foward. Am I doing something wrong? ???