Bummer on the caveman.

My bike shop has adapters that fit a shrader drilled rim to make a presta valve tube fit without issues. Perhaps with one of those adapters you'd be able to sell him long stem presta valves for his aero shrader drilled rims.

A set of 2 adapters cost me like 5 bucks or less I think.

Here are some examples I found:

http://www.sjscycles.co.uk/product-M...resta-3335.htm

http://store.bikefriday.com/product_...roducts_id=979