Because you do have 8p it means that the problem is not so visible. Say you have lost one cell that means 1/8 of capacity for that row. Around 12.5%. As you can see it already sounds the way your pack is behaving. I’d you have 10s2p that would be 50% and directly dangerous.
This problem will grow with time since those two rows will have to work harder so it won’t gett better. I personally would not sleep well without fixing that :(.
Say Tesla car has over 60 cells in parallel that is not a big problem,but in your case it could be.
It is always possible to charge the rows one by one. Takes some skilles but it is possible. Or you could check if all the cells are getting fully charged after a long charging time.