Lightspeed are the only manufacturer that has not stood by their product in my experience of many decades. The revolting soft touch plastic eventually degrades into a sticky mess and they won’t do jack about it. Never again.
Had both Bose X and A20s repaired no questions asked. Both times the boom mechanism loosening.
Anyway. I have a few ANR LS of various flavors in the cupboard if the OP wants to scavenge them for parts.