[MT-AU Public] RB1100 Rack-Mount Ears

Hi guys, We've had a few RB's come back as of late with missing ears (I'm not sure what the techs do with them, I think they get hungry). Does anyone know of a business that sells these sorts of spares? It looks like a few in the US sell them, but I'm hoping someone local has them. Cheers! Regards, Ben Farmer