When I first try to pull the trigger I feel a slight bind when pulling double action. It goes way after the first pull. If I cock the hammer single action there is no bind. If the cylinder is open and I pull back on the trigger it still binds(cylinder latch is pulled back) on the first try. I took the side plate off and slightly lubricated the springs, but it did not solve the problem. The funny thing is that it only happens on the first try of pulling the trigger. Any ideas as to what would cuase this. Thanks