(<= (Model-Id $X Counterweight_Guard_Thickness_M01) (Counterweight_Guard_Thickness_M01 $X)) (<= (Has-Parameter-Slot $X Counterweight_Guard_Thickness) (Counterweight_Guard_Thickness_M01 $X)) (<= (Counterweight_Guard_Thickness $X 0) (Counterweight_Guard_Thickness_M01 $X))