That addendum is not the right way to balance a lipo pack. Are you sure you typed in the addendum correctly?
As lipos age, their state of charge shifts and their capacities change as well. In a 2 cell pack, one cell may be loosing capacity faster than the other - which is the point of balancing.
For example if one cell is 5000mah and the other is 4800mah. If you discharge both of them to 0% charge and charge as a pack - the 5000 gets undercharged and the 4800 gets overcharged. It's important the the individual cell voltages are close to identical at the END of charge not the beginning.
If you cells start deviating and if you discharge each cell individually and charge them up again - you will have an unbalanced pack.
The correct way to balance with the GFX is to CHARGE each cell individually.
I used to be a spitter, now I'm a swallower. I graduated.