http://www.gasgasrider.org/forum/showpost.php?p=42981&postcount=19
My spec sheet (stock shims) reads like this:
Check valve:
0,2*11mm
0,3*22mm
compression:
0,1*22mm
0,2*11mm
0,1*20mm
0,1*19mm
0,1*11mm
0,1*18mm
0,1*17mm
0,15*16mm
0,2*14mm
0,2*12mm
Didn't do the work myself, though, so I can't...