+1 Nice work.
Looks like you almost there! And to think you had almost given up.
If Steevsee doesn't have the Zener, there are some at:
Element 14:
http://au.element14.com/nte-electronics/1n5379b/diode-zener-5w-110v/dp/2143709 - Only 74 cents each, but postage will be about $13
, or
From ebay where you can get 20 for $14 with free postage from China, in about 2 weeks
http://www.ebay.com.au/itm/190918809986They are listed as 1N5379B, but that seems to be the correct one.
I've had a look, but unfortunately I don't have any. If you were to grab the 20 from China I'd be happy to grab some from you and split the costs to make it more worthwhile.
Cheers,
Andy