The Lamp used is essentially a modified Cibie Tango, with Mazda's own bracket. These covers are just the standard Tango cover. But the covers are meant to be for a free standing lamp; to remove, you need to grasp the rear of the lamp. Without doing that, everytime the cover is fitted or removed, the aim of the lamp is thrown out. And from experience, I know the M2 lamps are very difficult to set up. M2 supply perspex covers to protect the lamp.
The covers were cracked, the lamps were fine.