This whole valve stem, let the air outta the tire thing reminds me of a story... from a time when I lived in Zim. There as a often occurrence, while stopped at some oasis along the way some one would (might) unscrew the valve stem just a little from a car parked out there in the 'car park.' After a brief stop for refreshments and so on, the car's driver resumes transport down the road until... until the tire deflates beyond it's usefulness. Stop... uhuh, and BINGO... the car behind stops too and robs ya blind!!!
Clever... nasty, and effective. Ask me how I know!!!
