Hi I’ve got a 2007 s type 2.7 diesel only done 39,000 miles in excellent condition love the car but have a problem when slowing down at a junction the gearbox gives a slight jolt as it goes from 2 into 1st gear I no these gearboxes have a fault I’ve changed the automatic transmission fluid but no change otherwise it changes up and down perfect apart from this any help would be appreciated thanks richard