At this point, I don't know if I'd rely on your SWCG to keep FC up at the level you need. Adding a gallon of 8.25% bleach only raises your FC by about 6ppm. Not knowing your CYA level, it may not last. You may need to add more.

Here's a link to contact AutoPilot direct with your issues, http://autopilot.com/contact, plus there are some quick links that may offer some help. Sorry I'm not able to help you much with your issue.