I had the same problem, no amps with kool aid after 7. I ordered pure citric acid @ $24.00 a lb. This did nothing, another $24.00 down the drain, so I took Bobs advice and put my plates closer together @1/16" apart, I am now at 32 amps cold with 35 packs of kool aid and after 2 hours it was up to 48 amps and producing good. I also have 5 of them wired parallel in the same bath. Happy at the time. I am now working on turning up amps with altered alternator along with another set of cells in separate bath. Goal 12 lpm at 100 amps. we will see and let you know.
So your cells are open bath type correct?