Was cleaning a hammerless S/W mod 642-2 (also marked DAV9672) in 38S&W +P &, when it went back togather, the paw that rotates the cylinder had no tension on it and would not rotate the cylinder. I am uncertain just how to proceed at this point. I seems to me that there is a spring within the trigger itself that places tension on the paw, but I can't see it. Any help on how to proceed would be greatly appreciated.