hello i have 16 x 12v agm batteries wired for 24v 8 set of 2 in series. should i link beteeen the positives in the middle of the bank? ie tied the batteries together in a 12v . I have copper bus bar parelleling the batteries together. i have a victron balencer in these but maybe better to do 2 banks of 4 eith another balencer. many thanks rich