I bought this pump and can't seem to get it to work properly. First of all the diagram/intruction is backwards. It says that the unlocked position is when the clip is flipped out, and locked is when it is flipped down or parallel with the pump body. Mine is the opposite. So I attached it and cannot get my tire passed 45psi, the air starts leaking out and it becomes very hard to pump ( a lot of forse is needed). Anything I am doing wrong?