After weeks of searching for a good source of information or someone to show me how to do this, I have thrown in the towel.
I tried to modify a new hand/spring assembly to see if I could "wing it" on my own and even though I worked on it very slow and carefully, I never even came close to getting it to turn the cylinder. It was quite frustrating not having the info I needed.
I did NOT modify any original parts or the new Kirst Konversion cylinders so no harm done.
I sent both Dragoons off to the gunsmith so it can be done right and I'll just have to accept the fact this is yet one more thing I can't do.
Thanks to those who tried to help out, I really do appreciate it.