I just purchased a used HED front wheel with a deep rim. I had to use two valve extenders, one short and the other long, to get the valve above the level of the rim. I mounted a Tufo tubular clincher and used the sealant. I am fully aware that some of you don’t like these tires, but that isn’t the issue. I can’t get air into the tire today. It pumped up last night and it held pressure through the night. However, it won’t take any more. I am happy to report that despite the extended extenders, I kept the valve core at the end of the parade instead of buried in the rim. Is this just a simple matter of removing the valve core and cleaning it?
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