Hi pigale, I can't really help as checking Chambers gives 3 variations so I reckon you've got quite a choice. If you are going to use a homophone in full or part wordplay perhaps it might help ixion if you indicate which version you're using.
(Don't know if that works, as I'm using 2 anagrinds, the latter basically redundant, and the former playing a double role, in that it includes the definition).