I only own one Uberti/Cimmaron and it's a Colt Open Top repro.
I happened into two of them, one still NIB and kept the other 'lightly' pre-enjoyed one.
I really like it and had been casually looking for one anyway.
A few things about it needed some work.
As state already, the springs can be overly strong in Uberti guns and this one was no exception.
The bolt spring was so strong it actually kicked the bolt off of the hammer cam early and produced what felt like a 1/4 cock notch which the Open Top does not have.
A simple replacement w/a Heinie brand wire spring from Brownells made all well again and actually brought the revolver back to life feeling like it had had an action job.
The main spring I thinned just a touch but probably could have been left alone.
The ejector rod hung up on a machined cut in the ejector rod tube at the very end. It makes a slight turn there and the angles are abrupt causing it to jam when operated. Smoothing them out with needle files took care of that.
The firing pin was a bit too long and pointed like an ice pick. It punctured 80% of the primers fired on the first batch of loads I put through it.
Shortening it and rounding the tip took care of that issue.
The bbl wedge was installed & removed with what appears to be a Fred Flintstone style rock hammer at one time but that isn't a factory problem.
What was is the cylinder shaft being a touch too long and not allowing the bbl assembly to slide on all the way and mate with the front of the frame.
A former user decided to hammer the wedge tighter to draw the bbl and frame tight together. It doesn't work that way.
All small adjustments, but things that should have been done upon factory assembly for normal operation.
As I said, I liked the Open Top style just as a shooter and still do. It's a very accurate revolver.
I don't know if other's are the same, it's the only O/Top I've ever worked on.
Several SAA Uberti's have come in for adjustments, repair over the years. Usually just the overly heavy springs,,timing problems from wear, stiff actions from poor fit on occasion.
Generally pretty nice firearms. Some can use many Colt small parts interchangably,,others not. Seems to depend on the age/when produced.
The QC seems to run up and down on Uberti made products but nothing that can't be adjusted or fixed.
It's just that you shouldn't have to fix things on a gun right out of the box just to make it work correctly.