Hi, I have a CFW-8 that no longer positions the filter over the center of the sensor. Whether on power-up or selecting a filter with MaxImDL, the final position of the filter magazine is usually between two filters. I've tried the usual troubleshooting of cleaning the sensor and the rubber O-ring cleaning the index pins and making sure the white paint is still intact but so far no luck. I will also check the motor tension but I think it is OK. If anyone has further troubleshooting I can try I'd appreciate it. Otherwise, if an SBIG rep could tell me what the process is I to send the unit back for repairs; i.e. just the filter wheel with empty magazine, or both filter magazines with filters, the camera with CFW-8 attached and the power supply ? Do I need return for repair auth. number? Best regards, John Ott