Sorry to see this...ours (early 2012 versions) broke there and other places frequently (you have done well to get 40K miles out of a set - perhaps they improved them?!). All the breakages- prompted me to buy a low cost MIG welder and repair them ... however, once Garage 56 came out with their carbon ones, we have gone to the "dark fibre" side. Regret that the old ones got broken up and re-purposed/scrapped so cannot help your plea. Don't regret having a MIG wleder now - has been very useful for lots of other jobs! Good luck
