I took my indian 1983 headset top/bottom and gave it the fettle, headset mirror holes welded over at work and filed back smooth, I then filed smooth to enable it to have the look of italian, bought a new rim and filed it till it fitted as best it would..then fettled rods and metal wheels to eliminate any slop..
Although not perfect as an italian original its not bad at all..

Had some filed pre paint pics on photobucket but looks like they have been wiped.. :flaming: ..hope this helps Den, basically it can be done and the alloy is soft as s**t...take bit off at a time and keep checking it..