"Jim Burns" writes:

In this location, I can see no reason in the world that it has to be an
internal hex plug. I think it could just as easily be an external square
headed plug.
Jim

They are no better! I've rounded off those even with a 8-point socket.

I'd love to test JBwelding the key in vs the rubbing compound etc.
approach, just to know which is "better"..

BUT every plug is different. How do you run a fair test?

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