Good, thorough review.
The trigger is quite stiff. Remember you need to SQUEEZE a trigger, not pull it. Pulling it knocks the gun off balance and makes the trigger stiffness much more obvious as typically only the top two joints of your trigger finger are dojng any work. Squeezing it, where your whole hand contracts, is less of a strain on your finger and helps stop the gun pulling left when firing. Overdo the squeeze and the barrel dips so it takes a bit of practice.
Edit: okay, that sounds like something out of a corny western movie. 'Ya gotta squeeze, pardner, or ya won't amo