There sure is a lot of talk about the mysteries and complexity of the old Colt “leaf mainspring” DA revolvers, such as those being discussed here.
I had to dig a bit through my archives, but I found an interesting article titled “Servicing the Colt Revolver”. It was published in Guns Magazine in May 1957. The author is William Edwards. But, the real author of the content is Arnold Goodwin (AKA: “Goodie”), then foreman of the Colt custom repair department. He began work during WWI, fitting 1917s! So, by 1957, he knew his stuff.
You can find the article by going to the Guns magazine website,
GUNS Magazine Home - GUNS Magazine, then going to the back issues page, and downloading the PDF for May 1957.
Here’s the link (I hope this is OK to list!)
https://gunsmagazine.com/wp-content/uploads/2018/12/G0557.pdf
Give it a read. You might decide the old Colt is worth reconsidering. Or, you might be completely scared off!
I really like the comment that the only tools you need are “a rawhide mallet and a clean file”! (Well, of course, you also at least need the correct screwdrivers!)