I went to use it this morning as a test before taking it on the road and I couldn't get my tire pumped up!!

So I need to ask - which direction is "locked" on the thumb lock: up or down? There weren't any directions with the pump cept for how to switch from presta to schreader and how to mount on the bike, and the pump head wouldn't stay on my stem no matter what I did. I ended up inflating my tire with my big standing floor pump. and praying that I didn't need the Road Morph before I got to work since it didn't seem to work! any help here is appreciated!
