I just received a Pietta 1860 Army from Cabelas a couple of days ago. I also have an older one - maybe 30 or so years old - so I can make a direct comparison as to quality.
First, on my old pistol, the cylinder arbor was too short. I shimmed the bottom of the arbor bore in the barrel, and that sort of fixed it, but until I did, if one pushed in the wedge too far the top of the forcing cone would bind against the cylinder. I never checked the bolt or the timing on this revolver.
On my new one, the first thing I inspected was the arbor. It was perfect! The wedge itself was a little tight - it probably would have been OK but I ran the sides over a file a few strokes on each side and used some touch-up Perma-Blue on it. I did check the bolt, and as is reported to be common on these revolvers, the bolt was too wide to drop into the cylinder locking notches. I fitted the bolt to the notches and now all is good.
Otherwise, fit and finish is fine. While I was fooling around with it, I ran a precision Swiss file over the sharp edges on the frame and around the front of the cylinder. This is pretty much the nature of the beast even with much more expensive firearms. I had to do the same thing to my Colt 1911 when I got it, otherwise the front edge of the slide would draw blood!
Actually I'm quite happy with mine. I'm a tinkerer by nature, and I've always been interested in learning how to work on a single-action revolver lock work. So I was not at all upset with having to adjust the bolt a little.