Dave
I may be totally wrong with my guess but what I was saying is that if the lock was produced with a fly in it, the noise of the sear jumping over the fly and dropping back against the side of the tumbler would make a "click". That could explain your hearing three clicks.
If a manufacturer has a lock on hand that was designed for a gun with set triggers he may decide to use that same lock on another model pistol he wants to produce that does not have set triggers.
It is just a matter of trying to keep the cost down by using an existing 'on the shelf' item rather than producing a special lock without a fly in the tumbler just for the new single trigger model gun.
A lock with a fly in it will work just fine with a single trigger gun so, there would be no reason for designing, producing and keeping track of a special "flyless" lock.
If your curious about your lock having a fly in it or not you don't have to take your gun apart.
After making sure the gun is unloaded and uncapped pull the hammer back to full cock.
Then place your thumb on the hammer spur to keep it from falling rapidly and pull the trigger.
As soon as the hammer starts to fall, remove your finger from the trigger allowing it to return to the unpulled position. The hammer should now be just below the full cock position with your thumb holding it.
Slowly allow the hammer to fall towards the fired position.
If the hammer travels downward to the fired position and does not catch in the half cock notch
on the way down, your lock does have a fly in it.
If it stops firmly at the half cock position your lock probably does not have a fly in it.
I say "probably" because sometimes as the hammer is slowly falling from the full cock position as yours will be (because of your thumb slowing its fall), the nose of the sear may hang up on the fly rather than just jumping over it. In this "hung up" condition a slight force downward on the hammer will cause the sear to jump over the fly and to continue on its way down.
That, by the way has caused folks who own a gun with a fly in the lock to have accidental discharges. They lowered the hammer slowly thinking it stopped in the half cock notch while in reality, it was just hung up on the fly.
In a hung up condition like that any small hit or jar can cause the sear to jump over the half cock notch and fall on the primer.*
Perhaps your lock doesn't have a fly.
If that's the case it would be worth it to remove the lock from the pistol and watch and listen to the sears nose against the tumbler it while slowly cocking it. That might give you the answer to your three click question.
* I thought I might add this comment about flys and half cock.
If a person has a lock with a fly in it, and they want to safely lower the hammer to the half cock position they may do it by lowering the hammer well below the half cock position and then pulling it back upwards until they hear the sear snap into the half cock notch.
That is the only way to do this if the lock has a fly in it.
