Old 09-25-18, 11:30 AM
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Location: Allen, TX
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Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

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I keep a Presta adapter in my saddle bag in case I have to inflate a tire at a corn-venience store. And I used them for a couple of weeks before I found a Presta air chuck for my garage compressor. Sometimes they thread right on and sometimes they don't. I found a slightly bent Presta core was the problem. I guess it's possible that a slight misalignment could cause the Presta core to leak a bit but it sure seems like you would have heard it.

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