Hi OP
I'm in Australia and in the same predicament.
Bought a eShopp L and now having a hard time trying to find a bulkhead that would fit.
1" Bulkhead from eShopp has an outer diameter of 33.4mm where our metric pipe size comes in 32mm.
Just wondering did the Teflon idea work for you? Thought Teflon should only be used on threads
I've been scouring the internet trying to find a suitable metric bulkhead that's low profile (like the ones from eShopp) but zero success.
The Bulkhead you found sits quite high and doesnt really allow for a bean animal setup. Interested to see how you went