Yes I'm aware of that.If you insert the cylinder pin all the way in to the 2nd notch, you are enabling a safety feature so the hammer will not drop.
I did a strip down/slicking up thread a while back... Not sure if it'll help.
https://www.canadiangunnutz.com/forum/showthread.php/1349198-Slicking-up-an-Uberti-1873-Cattleman?
Yeshighlight=slicking
I was just pointing out,that mine is the older model with no transfer bar.
And therefore,should have 4 clicks