Jack, I have had a few lifters with a little lateral play in the right hammer. But once cocked that play seemed to go away.I think it's wear because the right barrel received more use.
As far as removing the locks I do it like this...Remove the lock screw almost all the way out then gently tap the screw head and the right lock should start to come loose. After you remove the right lock insert a soft drift and tap out the left lock. The lock fit in a shallow recess in the front part of the frame so they need to be inserted there before you reassemble them. Also push the triggers forward when inserting the locks so as to not have the trigger blades in the wrong position.
Hey... I just noticed your status is "Forum Member". When are ya gonna join this great bunch of gun nut's?....