I have been helping a friend with kickstart problems and fitted new change springs while in there. The bike then refused to come out of top gear. I noticed that the new change pawl spring had about 3mm clearance to the pawl. After I bent the legs a bit straighter (2mm clearance) a perfect gearchange returned. I have noticed a slight reluctance to select 3rd from top on my 99 , now I know what to do.