I wonder if this is the same gun I sold a few years ago at a Des Moines gun show? Any way, IAB is world famous for their O/U shotguns. Their quality is decent, very authentic repros. Some have minor problems with fit and finish (like the 1st stage trigger you mentioned). Considering a real Sharps goes for $3000 or more, the $550 price doesn't sound bad. I sold my IAB 1863 rifle for $450. It was a "wall hanger" but would shoot decent.