Hi Ian,Sorry to disagree with Kev,but the practise of using engine braking to slow down was due to poorer brake design years ago.The brakes you have are i believe disc on the front?not sure of the rears,but do use the breaks not the gearbox,it will be a lot more exspensive to rework the box than put new pads in it.Downshifting on a GP bike or a superbike is for racing advantage.