Hi! I have a '82 xs400 12e seca and clutch keeps acting up. It clicks into gear and rides smooth in low rpms but as soon as I get up to about 3000rpms the clutch slips and loses gear. This resulting in me not being able to travel at more than 80km/h. I have replaced all the friction plates and spring over the winter but it still feel the same. Any help would be awesome!