I know a few on here have small collections of Trangias... can anyone confirm whether the new production Duossal 2.0 pots stack properly with the ordinary aluminium ones? I have a vague recollection of seeing complaints that they didn't, when they came out a few years ago. I'm wondering whether I can get away with replacing just one of the ally pots in my Trangia 27 with a Duossal, or if I'll need to replace both to get it to pack properly.