Is your GG fairly new? It needs a little time for break in. Clutch tolerances are tight in the GGs and they use more plates than most bikes. What oil are you running? BelRay Gearsaver will make the GG clutch drag more for some reason. Run Spectro 80W gear oil for best results. If it still drags after break in back bleed the clutch through the slave cylinder fitting. When broken in and set up right, it should start in gear with a good kick.
Glenn
'00 GasGas XC250