Hi again, it turned out to be punctured float unit. Got hold of a kit including the float unit, rubber O-ring and paper style gaskets. Got the spares from a MG spares shop locally, as the HIF6 carb is also used for the MGB V8. Removed the carb by just removing a few of the connecting rods, which provided enough access to the bottom of the carb. Cleaned everything by using gasket removed spray, installed the float and packed everything ( I did not use liquied gasket) and.... off we went ;.)
