[sswee]

No problem with your tank temp. and the aggressive agitation doesn't hurt as long as it doesn't effect your hook-up. I can see the difficulty figuring the SA. The amount you were off was not critical. I don't know if I would drop the CD having trouble with pore size holding dye. The main problem is going to be the acid concentration. It's way to high for the current densities your running. It needs to be 1 part battery acid to 3 parts distilled water. Approx. 5% by volume. At the lower CD's, the higher acid concentration causes dissolution and the lower voltage readings.
SS