I am guessing I am an idiot and that is why I cant figure this out. I just bought a brand new Smith and Wesson model 629 classic. I am having problems getting the chamber to swing open. I turned the lock off, and I cant figure out what else it could be. The gun will cock, and the chamber will spin, but I am unable to get the chamber open. Any suggestions? Is there a factory setting (since it is a brand new gun) that I have missed? Thanks is advance.