They are actually for sag, I didnt think mine did anything either, untill I read marz site and they said they were for sag...rckymtnrm7rider said:
Put them all the way as low as they go, sit on your bike and your fork will sag maybe an inch... then put them all the way tight as they go and it will sag a few milimeters... hard to notice when you are riding...
btw, I dont have a shiver so