Frankly I'd clean up the surface rust and keep using the old ones. The old Craftsman stuff is better quality than the new Craftsman stuff, especially after they started moving stuff to China.
Between that and the attitude the cashier gave me when I mentioned the "made in China" part, I have my doubts about going back there. I should probably write a letter to Craftsman corporate voicing my concerns/complaints about the whole thing but they also probably wouldn't pay attention either.