I've been looking for exactly this post/this size for ages too. Nothing showed up here or elsewhere so I ended up taking a punt on one of these http://www.ebay.co.uk/itm/Hylix-Ultra-S ... 416e25d5b7
Won one of the auctions for £36 posted and just waiting for it to show up.
Good luck with the search, I can offer an EC70, if that's any good to you?
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