Where is the chain hotspot at the moment ?
I have used 4 x 12spd chains in the last few weeks, #2 son needed a new cable this afternoon and a quick check put him very near 0.75mm... another one gone.
My stocks are down to 1 x 12, 2 x 11s and 2 x10s
They were lifting them and taking them to races as spares and not returning them to the drawer, I have found brand new chains laying places that they shouldn't be in the past.
Everyone has denied touching any since the last time I read them the riot act.
Little #%&#$@% cost me a fortune.