I do want to try doing this myself. It's all part of the hobby in my opinion. If I can't do it, then I'll be sure to take it to a smith, but in the mean time I'm all about learning something new.
A new hand is only about $15 so the worst that can happen is I have to skip lunch a couple of days. If I have any doubt about my work I will not attempt to fire any of these.
During the one conversation on the phone with the gun smith Kirst uses, he said if the hand is fitted properly to the new conversion cylinder it should also fit the original BP cylinder.
Any suggestions are very welcome.