Here is the base valve shimming laid out
http://gasgasrider.org/forum/showthread.php?t=7546
I had great success with no revalving on my '10. Solution was to stiffen up rear shock. My setup now is:
4.6 springs, 100mm 7w oil, comp clickers 10 out, rebound 10 out.
rear is ?hlins shock with a 54 spring, hs 1.5 out, ls 10 out, rebound 13 and static sag set to 25 mm. I weigh in at 88kg now, and this setup is super sweet on choppy ground at high speed. For slower, more technichal terrain i change ls comp to 13, same with fork comp, 13 out. I have noticed that the Sachs forks love to build up air pressure, after a 2h race it sounds like i am emtying my wheels when i open the fork bleeders. This excessive buildup is unbalancing the suspension and makes it feel harsh. I really need to install pushbutton fork bleeders.