Update to my issue...
I contacted Asus using their web chat. Told the CSR about my issue and confirmed my Nexus 7 serial number. They emailed me paperwork to take to my local FedEx shipping location. It happened to be our local Office Max store. They scanned in the bar-code and processed it. I got a confirmation email with the tracking number. This was around June 6th. They received it in Texas 4-5 days later (because of the weekend). I checked the status almost every day. About 10 days after they received it I saw a status update. They included a FedEx tracking number but every time I entered it into the FedEx website, it showed up as invalid. I gave it a couple of days and then called FedEx. They were able to track the package and it was delivered to my house in late June. All in all it took about 3 weeks but they did repair it. I thought they would have just sent me a refurbished tablet. They actually fixed my tablet because it still had my screen protector on it. Just wanted to update you with the good news. My son was so excited to finally get his tablet back. I wasn't expecting it to take so long but I guess I can't complain. It didn't cost me anything out of pocket even to ship it to them. Thank you for your help with getting everything back to stock and the boot-loader locked.
Tablet was originally purchased as a refurbished tablet from a seller on EBay. It was supposed to have a 90-day warranty from Asus. Glad they held up their end. It all worked out in the end.