The pivot lock (the red piece of this assembly) wears out prematurely, leaving the light to flop around. When the original lock failed, I was told it was a wear item and not covered under warranty, so I bought a replacement. The replacement lock has now failed after less than a year of use. I only use the light on the road, so it doesn't get a beating. I'm not super excited about buying another replacement, so I'll probably try a homebrew solution to secure the pivot at the right angle and get more use out of the light, which is otherwise fine.
I purchased the tail ight in 2015 and have used it on countless rides, for tens of thousands of miles - along with hitting the deck a few times. About a month ago the mounting bracket broke. L&M replaced it for free. That's over-the-top good. I was willing to buy it for the nominal price. So the light continues to give good service...
I am impressed with the Light & Motion customer service. They quickly responded to my warranty claim and made the process simple.
Props to the L&M crew for fast response in getting me replacement parts for my Vis 180