Looking for some latex tubes with 80mm valves. I'm doing some time trial and want to try using latex tubes with my S-Works Cotton Turbo tires, but can't seem to find any with a long valve suitable for a deep section rim. It doesn't appear as if anyone even makes them? Is this true? I'd think that there'd be plenty of options, as it seems that the prime draw for latex tubes is the low rolling resistance which is perfect for the time trial crowd that would also be on deep section wheels.... no?