Anyone know the proper float setting for 40 DCOE 151s with plastic floats? All my books spec the setting based on metal floats. Also, from what datum is the setting measured? I'd assume (uh oh!) the tip of the trapezoidal-shaped float farthest from the fulcrum. TIA Jim -- J.C. Hassall Blacksburg VA '63 TR4 in autox preparation 96.7% finished, 90% to go