Join Date: Aug 2006
Location: Central Coast, CA
Bikes: Surly LHT, Specialized Rockhopper, Nashbar Touring (old), Specialized Stumpjumper (older), Nishiki Tourer (model unknown)
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Sometimes when I put it on a Presta valve the valve hangs up as I'm inserting it and a little air escapes. I put my finger on the other hole (the Schrader hole) to try and trap the air, and lift the lever quickly (away from the tire.) Once the lever is up the leaking stops. When I pull off the pump head I do it with a quick motion and no air leaks (except the little high pressure air built up in the hose.)
I haven't had any troubles with the Schrader side, although I haven't used it much.