While over hauling my Rochester Model B carberator,I knoticed that #7 power spring is missing and does not come in the rebuild kits.Dose it have to be there for the carberator to work properly? Referance Motors Auto Repair Manual sixteenth edition page 148 or Chevrolet Truck Shop Manual 1948 to 1951 models includes 1952 supplement page 6-63 Thanks Neal
