I started my battery bank with 2 Smart lithium battery 24 v in parallel (diagonal). In Victron connect they both showed the same voltage. A month later I added a third battery and noticed that the battery in the middle was now 0.10v below the batteries at the ends. Now I added a fourth battery in parallel using Bus bars and noticed that battery 1 and 3 have the same voltage and 2 and 4 voltage is 0.10 below 1 and 3. I thought that by using bus bars (diagonal) they would show the same voltage. Any clues?