On the anti skate lever/bar,you will see some indentations,along with a sliding ring.I believe,from memory,that the third indentation(away from the arm housing,and towards the outer,END, of the antiskate bar,is the two gram setting.Starting at the first indentation(bar slid towards main arm bearing)is already one gram,just slide it two more slots,if memory serves me.I'm now on vacation,so cannot double check.Call Graham Engineering,to double check on this.Also,try to acquire the "blue" internal damping fluid,as it is superior to the clear stuff,you most likely have,and will be low cost.
Best regards,and good luck.