J-Bar
Member
The cylinders on a couple of my 50+-years old Smith and Wessons were very dirty, so I wanted to completely disassemble the yokes and ejector rods to get them completely clean. A couple of those old screws were frozen. Kroil alone couldn't loosen them. I made up a combination of transmission fluid, acetone, and Kroil- similar to Ed's Red but without kerosene and a few other things- and an overnight soak got the stuck screws loose. Looks like the key ingredients may be ATF fluid and acetone. Just saying you might try approximating the original formula even if you can't assemble all the classic ingredients.