Donny,
Have you any photos of you and your cart, or anyone for that matter, love to see them. I think you are right after 10 years the tubes will be porous, they are not like tubeless tyres.
Tony
[This message has been edited by Tony Hughes (edited 12-31-2010).]
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Tyros 4/Pair SR 350/ PC with a i8 intel chip, XENYX 802, Ford Focus 2 litre/Tascam DR07/Brother printer/Designjet 500/ our Doris/5 Grandchildren/ white boxers short Kymart shipped over and Typhoo Tea Earl Grey