The search for oil tightness

[nrzam]

I had a very similar situation and following a prompt from Ruaridh I found that the wear around the fuel pump pivot shaft was a major factor. I replaced the fuel pump with a new one only to find that I had petrol gushing from the carb. I replaced the top part of the fuel pump with the old one and used the old spring. All is now well with that particular leak cured.