My only suggestion to spreading the interest in classic lightweights: ride them. Wear classic kit, polish 'em up and take on every carbonfibre machine you can find. The lads in spandex are always intrigued, sometimes embarassed and often captivated: "Cool bike", "Mr. Retro" etc.
My regular cycling partner two summers ago was an 18-year-old who started with a Performance and eased enthusiastically to a 1978 Raleigh Competition GS bought via the CR List. He thought it was the best looking bike on the planet and kept it that way. And rode it like it. And he'd never go back to that Performance. He can sneer at tig welded Asian tat better than I can.
Forget all the jargon and the debates on Brev. vs Patent, classic lightweights are hot, cool, retro and "in".... when you keep 'em on the road where they belong. And always wear black leather shoes with the little white sock and toeclips: 20 somethings just love seeing that!
Washington DC USA