Bottoming out should be adjusted by adding more compression, not preload. No matter how much preload you crank into a spring, it doesn't change the spring rate.i had my sag set up by some onside suspension guys. they put a ziptie on one of the forks to see how far the forks travel. its about 5 mm from bottoming out. i read online it should be about 10 mm. do you guys think increasing 1/2 turn on the preload should get it pretty close to 10 mm?
adjusting the damping does more to your spring go check out dave moss videos on onthetrottletv.com also feelthetrack.com really need to get it right