Whilst I'm on the blag! Can I also ask what sort of delta figure you get when your battery is on charge in the absorption stage of charge?
I still have to cap my absorption voltage at 13.8V as anything above this causes the delta to increase rapidly as cell 4 seems to increase and cell 3 decreases. This occurs when the absorption voltage is above 13.8V or so.
My battery has cycled over 60 times and I'm not 100% happy that the cells have ever been in balance.
I'm thinking that I just have a sketchy battery which I should possibly take up with Roamer.