Ok I have this old K-frame 38spl. that my father-inlaw carried when he was with the Pittsburgh PD. He bought it off a friend of his when he started on the job. He gave it to me a few years ago before he passed on to that big DONUT SHOP IN THE SKY! Well anyway I did some research on it and found out it was made between 1946 and 1949. It not in bad shape and shoots pretty good. When I first got it I cleaned it real good and took the side plate off and blasted the inside with some gun cleaner and put a few drops of oil on the moving parts and closed it up. Now after all was clean and oiled up I put some snap caps in it and started to dry fire it a little bit. Like I said I have shot it and it shoots great,but I noticed on the triggers return about 1/2 to 3/4 of the way back to reset there is noticeable hitch in the trigger. You dont notice it that much if your running through 6 rounds one after another, but taking one shot DA you notice the hitch alot more.Is this something I should be concerned about or not? One other thing,the side plate has 4 screws in it,and what is the screw for in the front of the trigger guard? And should it be tight?