When I bought my first Uberti Dragoon I noticed that most all the Dragoons the man had in the case had the same problem with the wedge you could take your finger and push the wedges back and forth. I went on and got the one I wanted anyway and after firing a couple cylinders full it went to working like it should. I tried to show the guy in the store what was causing the problem that the wedge was almost bottomed out and the cylinders were hard to turn when you pulled the hammer back. I think he was more in to getting them sold than lessing to me. I mean what the heck do I know.
