Tesla changed the firmware so it balances during charge, if that brick is also showing Vmax at full charge then you need to find the cells that are compromising the sheet, not try and charge that brick because if a cell has shorted it will pull a lot of current way before the brick charges and continue to draw after it’s stopped charging, my car is never on a charger after it’s finished, because I’m either on a long journey it I’m parking at home where I don’t have a way to charge, at work I have to use a sketchy car park to charge so as soon as it’s done I move it, the ESS remains balanced after many many cycles of part charging. If 29 is V min it means it has less capacity abd that would mean a few cells need removing.