I also suggest that if you're going to such extremes to fine-finish your Campys, go the extra distance and get rid of those rubber valve stems! Rubber of all kinds deteriorates with time, sunlight, smog/ozone exposure and weather. They crack and are the single most common reason these days for sudden tire deflations.
Metal valve stems are insensitive to all the above. Pantera vendors carry chromed-brass stems in various lengths (shorter is better) and a few carry the factory-optional Gr-3 aluminum valve stems with aluminum caps. Doesn't save much weight and you do need to use anti-sieze on the stem-nuts and caps. But every little bit of unsprung weight-loss helps handling. and they are 'factory'.
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