Converted a 1917 S&W from 455 webly to 44 with new cylinder and barrel..Got the cylinder gap down to .005 ,,cycles and locks up perfect..BUT !!!,,,Always seems to be a "BUT",,The old ejector rod wouldn't work because of reverse threads on the new cylinder rachet..,,So after ordering a whole cylinder assembly off e-bay.. I put everything together..Closes fine ,,locks up fine,,"But " Now when I go to cycle the action, the cylinder turns and locks into battery ,,,,BUT the hammer will not go back far enough to fall..It will not even go to full cock when thumbing the hammer back.. I checked for clearance on the front and back of the cylinder and nothing is holding it up from the outside..So, what gives?..Any ideas?