Can you send me your info please? I can get you in touch with one of my Technical Solutions Associates so that we can get your batteries fixed up properly.
To fix the inverter reporting incorrect SOC... Flip your battery breakers off and on one at a time starting with the primary battery and working your way down the list.
Typical behavior for my EG4 LP4 batteries. It took weeks to top balance. Last time I checked, I still have one cell in one battery that runs away 0.13v over while the other cells are all within 0.02v
When Using EG4 type I have 4 batteries that hit 58v no problem 1 that hits 58v occasionally and the 6th battery with the runaway cell that runs high never hits 58v without a OCV warning.