Here is a tip from the gasgas trials website :
"NOTE.... Jim Snell advises that the most common cause of clutch drag on the Gas Gas (90%) is when the screw on the clutch lever is turned in too far, when the customer assumes that less free-play equals less drag... quite the opposite, when the piston is not allowed to come all the way back to its stop. If the piston is not returning to the outer stop 'c' clip, the stroke is less, causing less fluid movement to the slave piston as well as blocking the bleed hole from the reservoir to the piston and no additional fluid can be drawn into the system."
My guess is that the variance is due to bleed hole being blocked - you need to back the adjuster off a touch.
If you have clutch drag, it can be minimized by using either amsoil 0w40 motorcycle oil or Shell Rotella Synthetic 5w40. If it were me, I would use the rotella syn 5w40....
jeff
__________________
|