During our last match today, we lost one side of our drivetrain, and were unable to drive around. When we took apart the BaneBots gearbox, all 5 of the pins in the carrier plate had come out of the carrier plate, so that the output shaft spun freely.

This is with the new hardened carrier plates, in a 2-CIM 12:1 gearbox.
Has anyone else had this problem?