[Ron Wood]

I suspect that in the photo the fact that the rear toggle link is not flush with the receiver rails is due to the toggle train not being fully into battery. You can see that the toggle is still buckled at the joint. Perhaps the action was eased down and the toggle latch was not fully engaged and was holding the action open a wee bit. Try closing the action vigorously or push down on the toggle joint and see if it flattens out.