Zipp disc valve hole - how to make it bigger??

Originally Posted by cycledogg1 .

So, as of now, I have to wiggle the pump head (which is by Silica specific for disc wheels) onto the valve and when finished pumping the air into the tubular, I have to wrestle the pump head off. When doing so I loose air and then not sure of the psi.
You could also invest in a Hirame valve chuck which can be fitted to any pump - I currently have one sitting on a Blackburn. It requires a ridiculously small amount of valve to grab onto and no pressure is lost on release.
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