I finally got around to taking this in the the dealer. I'm really glad I did. They had it for 3 days, but they resolved the issue, cleaned it up inside and out, and it's all good now. It's nice and quiet down the highway. The leveled the pack glass panel (side-to-side), and moved it back some. I drove a '16 MKX Reserve for the 3 days - 3.7 fwd. Power was very nice, and features were also nice (massaging seats, Revel Ultima, etc). However there were some real ill-fitting interior panels (A-pillar covers were terrible). It was quite disappointing for a ~$60K ride. MPG was pretty impressive for it's heft. Honestly, I was glad to have my MKC back, and wouldn't trade. I much prefer driving it in city traffic.
They ordered the modem, and that should be in next week. Luckily, the dealer is 2 mi down the road, and I don't have to take a courtesy shuttle all over town (like at my Jeep/Dodge dealer).
2015 MKC Reserve FWD: Ruby Red, THX, Technology Package