Some gobos can be damaged quickly in the MAC 2000 Profile if inserted backwards. Particular care must be taken with the Dots, Highways, and Triple Cone gobos supplied by DHA. These must be installed - as described in the user manual - on the color/gobo wheel with the coated side, which is white, towards the front, away from the wheel. The DHA gobos can be identified by the fact that they are white on one side (the coated side) and silver on the other. Identical gobos supplied by Beacon are silver on both sides.