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Cavitation

If there is water in your clean-out ports at the end of day, seal the plugs as described in this thread.
I do have water in the clean out plugs after every ride. Whether it’s coming from the bottom or top I don’t know.
 
Like others have said bee's wax works.........mine are tight no leaks past seals......but some time a inch or so is on top the plugs from our bathing suites as we get in and out at the sand bar............no seals on the hatch on my 2013.
 
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