Even though it was a "new top of the line" bow, was it this year's model? All of the shops I've worked in had,at least a few, of the previous years bows left over at model change. If there were safety issues involved, I tried to make any changes, under warranty, before selling these bows. If that wasn't possible, I made sure the customer knew about them so he could deal with the manufacturer before a problem occurred. There are some people out there, however, who don't know, or don't care about these problems. They just want the sale.
Most of the manufacturers do act as quickly as possible on correcting safety issues, however, if for no other reason than product liability. There are too many morons ready to sue at the drop of a hat and too many judges willing to reward them even if ther stupidity caused the problem in the first place, to let an obvious safety issue go unaddressed.