The only really tricky item is the basket/sprocket, as when the sprocket teeth are worn there is precious little room available to grind them off and then weld/braze on a replacement sprocket ring. Indeed when the teeth are only slightly worn, the side-plates of the primary chain soon start making contact with the body of the basket, if it is a ‘banded’ type, as on TT Replicas, Sprint Specials, and 1931-1933 Flying Squirrels. I have never tried to do that job, and one or two old baskets with worn or broken teeth sit forlornly on my shelf. Many years ago, when the sprocket repair king Roger Maughling was still alive, I showed him one of them…. There was a slow shake of the head, rather than the nod I was hoping for.