RC/Neil. Thanks, yes - that stuff seems not too hard to find when you know what it is that will do the job. Thanks. I did google the same. ... though I think the stuff at bunnings (and many others) is likely measuring ID, not OD. But all the same. I should be able to track some down. I post here what I find and where.

RC - you know, it is remiss of me but I didn't stop to think for a moment but of course the 10EE would be copper - plastic tubing on a 10EE?! Never!

Greg.