Replacing 2 Cells

I am getting a couple of Torque Battery trouble codes of unbalanced cells and broken connection(s).
Actually the only two Trouble Codes that come up now on my 2003 Sedan restoration project after I fabricated and installed a new cat and exhaust system.

I pulled the cover and terminal rails off of the battery assembly and found a lot of corrosion on the rail terminal connections and a broken corroded wire in the terminal to the Battery Control Computer. Serious enough that I ordered new rails.

Painstakingly, I have tested each and every cell. Trickle charged a small number of low cells to 7.8+v and they are holding charge at a nominal of 7.6v+/-, as with all the other good cells.

However there are 2 cells that easily take the charge to 7.8+ volts but then, with in 30minutes, discharge down to 1.3v and 3.6v.

I am assuming that this is a non-serviceable issue for these 2 cells and that I need to replace them.

I just ordered 2 gen 1 replacement cells.

So it's now off to another phase in my adventure of restoring my "Little Blueberry" 2003 4 door Sedan.

Any and all input and advice will be greatly appreciated.