Hi all. I’ve got a 6480, when I bought it dealer said it does 47-48 kph (he drove it) best I could make it do is 43kph with both hand throttle and foot. In all gears it revs round to 2300rpm but in top gear revs just to 2000rpm. Does anybody know anything regarding this? I’m doing more road work currently it’s not major but would help. Thanks