http://www.factoryconnection.com/index2.htm here's a quick guide on setting you sag, and how fork height affects handling.
I must apologize for a mistake I made previously about my race sag setting,
it is not 95mm it is 115mm
I had it backwards. When I set it up new I set it at 105mm by recommendation of a magaizine article, but I added 10mm of sag, in other words I took preload off the spring to lower the seat hieght, I was thinking the number came from the axel up, but it it from the fully extended position down to where it sits with you on it, duh,
the number comes from the distance from the length from the axel to the junction where your side panel and rear fender meet with the bike on the stand
then you measure the same points with you on it in full gear, take that number and subtract it from the first number
this will give you your setting if the number you get is lower than 115, you have too much preload on the spring, break the lock nut free and turn the other one counter clockwise to take some preload off until you get to 115mm
if the number is higher add preload till you get to 115mm