The JM springs are not enough. You will still need the services of a good gunsmith -- preferably one that shoots revolvers himself (they're getting harder and harder to find in our neck of the woods, Dagz) and thus knows what he's doing.
A good action job has two components to it: 1) smoothness and 2) lightness. Smoothness is more important (heavy but smooth is better than light but gritty) and that's where the gunsmith comes in. He will disassemble all the action parts that come in contact and will stone them to get as little friction as possible. Some gunsmiths are better at this than others.
Jerry's "Revolver Action Job" video can show you how it's done, if you're mechanically inclined and have the right tools (sharpening stones, mostly) to do it yourself.
Bubber, right now, all we have are Winchester primers and nothing else. It sucks, I know.
And please add this to my Christmas wishlist:
1) A reliable source of Federal primers. Heck, even an unreliable source is good enough; I'll just buy once, but buy enough to last me two years.
2) That Carmoney decides to visit the Philippines with his magic Dremel and sharpening stones. San Miguel beer's on me