Swampman, I wish I could help you with your Elsie question but I can't. However I do have a question for you. I have a 1917 Meriden 20ga that I'm trying to resurrect. It isn't on par with your gun but as best I've able to figure, it is supposed to have firing pins that just sit in the holes without springs and are held in by the hammer and possibly the stock. My problem is that I don't have the pins but I've been told that this arrangement was used on some Elsies. Wondering if you could post a pic of your FPs? Picks of the gun would be interesting as well.
Another thought, have you checked out the LC Smith forum? Not that this isn't a great forum and you'll probably get your answer here.
Thanks
Kirk