Anyone else have a popping/body flex noise coming from the rear driver side of their '15 or '16 MDX? I just traded in a 15 on a 16 in hopes of getting rid of this annoyance but tonight my '16 started making these same noises. Has anyone else experienced this and know what the cause maybe? My '15 was out of the factory warranty and I didn't want to pay lots of money out of pocket for Acura to find the source of the problem. The tech initially thought it maybe a cracked spot weld behind the headliner. However, since my '16 is now making the same noise I am not sure a spot weld issue is the culprit. Has anyone heard of this and knows what could be the cause? My '16 is still covered under the factory warranty and I want to get this addressed before the warranty expires. Luckily, I have a few years and several thousands of miles to go.