I like my Joe Blow but it need replacing as well. I use a "pipe" accessory to pump up my TT wheels which have a recessed valve and the head of the Joe Blow will not fit in the recessed area. Anyway, the pipe damages the rubber seals on the presta valve on the Joe Blow so when I don't use the pipe it leaks while pumping a regular presta valve. I guess I'll go shopping---probably for a 2nd Joe Blow.
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