If the guy has worked in a shop for the past 6 yrs he should know all about carbon arrows by now. I think he lied. didn't they ask for references and call the place?

Here's the problem I see atbox stores. Some places just don't seem to hire people that know something about the products they are selling. I used to see it all the time at a store where I grew-up. The guys behind the counter did not hunt and knew nothing about bows but were selling them.