yeh i also thought it could be to do with the counters being smaller, i thought the first marker was quarter tank? on the 1.0 dials it was showing just over, on the super s ones it was showing under! gonna wait till my tanks run down to empty and then stick the dials in then, making sure its showing empty and see what happens when i fill it up!
I'll just keep my self a petrol can in the boot incase!