Oooh, that's a possibility *ponders*
I'll have to think it through, as the hardox bars make up a fair bit of the weight of the drum and with a (--__--) configuration, I'd effectively be taking one of the bars off. Will check the weight of them next time I'm in the workshop and have a think.

And I've got tonnes of jiffy bags kicking about and remember your address, so I'll just stick those endcaps in a bag and mail them to you.