Haven’t noticed any issue. That said overtightening the top screw does cause the button cover to warp a bit.

I like it. The surface finish is obviously not as nice as the Logitech, but I like it. I’d probably like it better if it were smooth, which I might try achieving with some epoxy paint. The button feel is great. Better than my G502. Tracking is stellar. The shape is comfortable. The infinite/togglable scroll wheel on the G502 is sonething I wish it had but I can live without it. There’s also that special feeling, that someone decent made it, and that it can be infinitely repaired. If it’s not a stretch money-wise for you - get one. In the worst case scebario your money would have gone supporting open source hardware.