The gearbox on my wife's 2002 Jazz auto (CVT) with 32k miles has started 'hunting' . Driving at a steady 30 or so, it slows down, then picks back up as though it is changing down a gear, then back up. The gearbox oil has recently been topped up with the correct fluid (it was very low, apparently). Car has been serviced annually by a Honda dealer but an independent dealer suggests the problem might be the gearbox on its last legs. Any ideas?