Thanks Ady,
Which bit came un-riveted?
I am off to have a look at the bike tomorrow so will have more of an idea then.
In terms of spares, the UK sherco importer ('Rathwell's'?) have told the mechanic that the Ducati fly wheel is no longer available (I don't know if this is "at all" or just through Sherco). I am not sure which other bikes / scooters use the Ducati fly wheel, I do know that vespa, Lambretta and Derbi all use the same CDI unit, perhaps one of them has the same fly wheel too.
Does anyone have a part number for the Ducati fly wheel?
Still !!!!!!!!!!!!!!
Paul