Thank you for your interest in Septic Scrub. You seemed to have done all of the right things to your system. I do not understand the "re-pump with annual peroxide treatment.". Septic Scrub is a dry peroxide and uses the same technology as peroxide treatments. If you have had a "peroxide" treatment, I do not think that Septic Scrub can help you. I do not have any good ideas for you. Since you had the lines jetted, it is not likely that a line has collapsed. The peroxide treatment after jetting should have cleaned the anaerobic products out. Give me a call at (888) 352-7226 and perhaps I can help you with some more information.