if its just a couple of bent fins you can straighten them out with something like the plastic knife thing that comes in iFixit tools kits, or really anything thin and flat that you can wedge in there. It won't hurt anything. However, if you bought this new and can take it back to the store for a replacement then I would do that, as it's clearly damaged (even if only a little) and that's unacceptable for a brand new product.
Corsair can be a pain to deal with when it comes to RMAs, sometimes they will try to make you foot the bill for shipping the product to Taiwan. That's why I mentioned taking it back to the store rather than requesting RMA.
In any case it's easily fixable so if it's a great deal of trouble to get it replaced then you may just want to straighten the fins yourself.
Best of luck.
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