I have a Colt Police Positive 22 cal. mfg. in 1912. When the hammer is cocked the cylinder will move a little side to side but when I pull the trigger and hold it the cylinder does not have any play. I would like to have a gunsmith look it. Does anyone know a Colt revolver specialist in the Houston area or have any comments on this issue? I understand these old Colts are hard to work on.