Got my 1851 Pietta 44 cal out this morning to go And shoot after while and the hammer will not pull back so I took it apart and without the cylinder in place it works fine. Put cylinder back on and it will not cock seems cylinder tries to rotate before barrel lock drops down. I just got this gun for christmas only fired 6 shots. How can I check or adjust timing? I tried Pietta website for info but that was a joke. So far my 1st bp pistol experience has not been good. Any help would be awesome. Thanks, KT