What Lynn said, and
if you are concerned about an airlock, drill a 1/16 or 1/8 " hole through the cap in a convenient position.
This will also allow a tiny bit of water to move about in the riser on the head.
f
__________________
Charles Fitton
Maryhill On.,
Canada
too many carriers
too many rovers
not enough time.
(and now a BSA...)
(and now a Triumph TRW...)
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