I recently had a VX-6hd fail to track properly or return to zero. Less than 2 weeks out from a big hunt. I called Leupold and explained the situation and guy acted like it still "could be you". I explained my testing, what it did, etc. Guy was very condescending. They shipped it back with the erectors replaced. Less than 200 rounds through it and the gun wasn't bashed around that hard either. I experienced the same issue everyone else did. Zero'ed at 100. Walked out to 700. Started missing. Dialed back down and put two in the same hole 2" high 2" right at 100.
You are not alone. I’ve sent back 5 Leupolds so far. They also do not respond well to being dropped. They do look great in the safe. Trijicon Accupoint 1-4 for me for when it matters.