I pulled out my 3/8 fuel impact yesterday for some work and noticed the sockets wouldn't stay on the gun. I mean if you turned the gun with the socket facing the ground it would fall off. These where craftsman 12 point non impact sockets so I went to and impact socket(tekton)and the socket retention was better but still not great. Is this normal? I haven't used this gun but one other time since I've had it. Have just about wore the 1/2 model out and it has never given me this problem with any sockets/ extensions.