Removing the lugs for the bar clamps as the bike will utilise clip-ons if it keeps it's front end. I was inspired to do this by a fantastic V50 build thread on the Do The Ton forum.
Took the bulk off with my new angle grinder which was a bit scary on such a small and critical piece. Then used coarse hand-files, the Black and Decker power file, a finer hand-file and then a Scotchbrite wheel on electric drill. Finer finish will be sought when the other lug is off. Have to say the power file is such a great piece of kit for this kind of thing.
Very satisfying - I do like working with alloy - I want to do more of it!