Joined: Dec 2008
Posts: 1,794
Likes: 83
From: Sendai, Japan: Tohoku region (Northern Honshu))
Bikes: Vitus 979, Simplon 4-Star, Woodrup, Gazelle AB, Dawes Atlantis
Originally Posted by
Millstone
I drilled through an aluminium valve cap. Worked just fine

THANKS ... I've tried other solutions when I could not locate step-down ferrules — and failed.
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Vitus 979, Simplon 4 Star, Gazelle Champion Mondial, Woodrup Giro, Dawes Atlantis