I was told by BBR that their forks come with 10 wt oil installed. Since I weigh 155 lbs, they told me to drain out the old oil and add 3.8 oz of 20 wt oil to each leg. Man, did it make a big difference. They work alot better now throughout the whole stroke.
SP-5s raise the height of the front end pretty high (almost chopper like), but you can move the tubes up in the clamps to lower it and quicken the steering up. I went with the Sik50's aluminum swingarm on the rear to get the bike leveled out, without having to raise the fork tubes in the clamps too much.