Read on another forum it has utterly shagged traction motors from accidentally having the reverser thrown into reverse whilst moving forward at speed.
Thanks, i remember reading this on WNXX about a month or so ago.
Bet someone got a smacked bottom for that.
Oh dear, now that's an investigation I gather.They are, but apparently the 67's have a quirk that meant the reverser can bypass the override if pulled back fast enough, or something to that effect.