If this is a new gun, it needs to be right or it needs to go back to S&W.
That said, I've had a few new S&W revolvers that seemed a little sluggish on the trigger return in first uses.
My suggestion is to shoot/dry fire it a few hundred times (being careful not to hinder the triggers return.) before contacting the factory. Based on my experience it will likely clear itself.
PS I have the same 5" Talo 686+. it's a favorite!
