Well thanks to Nice65s' link, I spent a productive hour taking apart my Globetrotter stove (nothing to lose I thought), and an old knockoff MSR pocket rocket. Seems that the threads are standard so all went together very easily. I just need a 100g gas canister, then the whole lot will fit back in the pots.Camping Gaz Globetrotter Stove: 35 Year Review - PopUpBackpacker
35 year review of the Gaz Globetrotter stove — plus how to convert the Globetrotter stove to accept modern canisters.popupbackpacker.com