Like Kengore said any chance you mixed the tip sections with another
Winston. They list a 6' 9" 5 pc as a 4wt, and there 7' 9" as there 3wt.
For the price of that Winston I would at least send it back to see what they say.Many years ago fishing with a friend our parabolic glass rods, our tip sections did get mixed and had a good laugh over that.