Join Date: Jun 2007
My Motorhome: Hymer Exsis-i 504
Thanked 498 Times in 473 Posts
I think you're in the right place, it's just that no-one had noticed your query, or has nothing to contribute. Hopefully someone will, soon.
I don't think they do anything smaller than 6kg bottles but you should get that info on their websites - autogas or gas-it.
There might be a smaller under-floor tank - phone and ask.