Hey Jon,
Not sure if you have found your wind screen yet, but there are a couple of places in Australia that are importing the Stout wind screens. I’m sure if you contacted them they would ship to BC.
You could try www.newoldcarcompany.com.au
I spoke to the owner a week ago and he told me he could get one in (new) for around the $400AU mark. Not sure what shipping to BC would cost.
Greg