I have been watching mine for several months now with no apparent cracks. I occasionally inspect with the jeweler's loupe just to make sure. Definitely better than a high speed castration with resulting crash.
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1971 Paramount P-13 Chrome
1973 Paramount P-15 Opaque Blue
1974 Raleigh Professional Blue Mink
1991 Waterford Paramount
Holland Titanium Dura Ace Group
Holland Titanium Ultegra Triple Group