Mark Shaw wrote:
There's no "setting" per se, just two holes in the chuck end of the
hose - one for Presta, the other for Schrader. They both seem to be
able to hold compressing air pretty well.

I'll just take it back to the shop and ask them to check it out. It
could very well be that I'm not using it correctly.

Well, I took it in. And the tech demostrated it working perfectly
on their bike. So I don't know what's up.

I'll continue playing with it; maybe I released too much air. The
Presta valve is a new thing to me....

Thanks for all the help.

--
Mark Shaw moc TOD liamg TA wahsnm
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"All of my mistakes are giving me ideas." - Natalie Lileks