Why send the drive back to Newegg at all? I've always boggled at this, because quite frankly it's not Newegg's fault that the drive was FUBAR. In cases where I have faulty equipment, hard drives go to the manufacturer, and motherboards and other printed boards (Video cards, sound cards, etc) within the return period go back to Newegg, but never
hard drives. I'm like many geeks out there, I practically worship the 'egg, but hard drives should be returned to the maker first.
I used to be against refurb drives, but I've had refurbs from WD and Seagate that have outlasted new drives from both of these companies, and from others, so I have faith that their process is more finely tuned than Newegg.
What likely happened here Agent Zero, is that Newegg got your drive back, and sent you another drive from the identical batch of drives they got in a shipment, and while it would be nice to help them identify a bad batch, it's just lost time on your part - send the drive back to the maker so they can record the problem and track trends, instead of relying on Newegg to do that.
That's how I do it, your preferences may not be the same, so it's your choice. Just thought I'd offer that bit of insight for what has worked for me.