I am working on a 1975 280C with the Solex carb. Does anyone know where you can get the rod to check the fuel level in the bowls. And if so how do you use it. I am sure it goes down through the bowl vent. Is the level measured from the bottom of the bowl or from the top of the vent. If from the top of the vent is it from the top of the casting or do you mesure with the little metal plate attached. If some one has the mesurements I could probably make one.