Wait, though - if you're about to ride and you've got a flat and no time to fix it, why not just take another bike? This is the advantage of having 4 bikes all ready to go at any time - if one's got a problem, I have 3 others to choose from, and they each have their own personality.
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"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles