I have a Rainsoft Gold Series System. My "motherboard" just went out on it and Rainsoft told me I would have to replace the whole system. I'm not sure where you live, but I live in the Dallas/Fort worth, TX area and will be giving away my system with all filters. The repair guy replaced all my filters and THEN informed me the motherboard went out. So, I have all brand new filters.
If interested and able to come pick up, let me know.