I would recommend looking on the coltforum. com or singleactions. com for more information.
In the first batch, SMfg. f'd up the cone firing pin to frame bushing fitting- (the firing pin was peening and deforming the bottom of the frame bushing).
https://www.coltforum.com/forums/lou...ics-dpris.html
To their credit they fixed the problem in the first batch of guns - but in a really mickey mouse way.
https://www.coltforum.com/forums/lou...pic-heavy.html
FYI these guns are dimentionally a copy of a Uberti, the frame and cylinder window are oversize to Colt.