Well Humpff!! I find I must agree with Gary. I usually do. Uberti's ..... Suck. I don't like Uberti. There, no that I have that out to the way .........
I have taken in a little work since I retired and burned my shingle. Putting together just enough Cap Guns to help maintain my level of sanity. Along with this, I have put together several "Conversions" for myself and a few (read .. FEW) others, using R&D type conversion cylinders. I have used Pietta as the base guns. Normally, just a slight adjustment of the hand is all that is required. Once set up for the Conversion cylinder, reverting to the Percussion cylinder is just a matter swapping out the cylinders. There is one small CAVEAT:
Once timed up for the conversion, NORMALLY the percussion cylinder won't quite come into battery when the action is cycled soft and slow. But, when the action is cycled as you would shooting in a match, the inertia of the cylinder causes the cylinder to "carry up" into battery without problem. Suddenly you have a very convenient "convertible" for those days less suited for Cap Guns. Cap Guns-R-FUN