This is Andy's 3rd gear from his T5 Quaife big tooth gearbox from Bernies, all gears shot-peened. Not caused by using the gearbox to slow down - was done on the acceleration side.
The gearbox has only done The Daddy Thrash, 2 trackdays and twice up the Pod.
Every tooth is chewed on one cog and the other is scored and just starting to crack