@PhilDAS you need to use silver on stainless bottle bosses, internal routing (if stainless) and so on. You'll have trouble avoiding it, and it requires less heat so may work better with propane anyway (I've never used it but think that makes sense?)
As it happens, Ceeway just got back to me and they're out of mudguard bosses so they're chucking in some stainless ones instead. Good job I ordered the silver afterall.
@PhilDAS you need to use silver on stainless bottle bosses, internal routing (if stainless) and so on. You'll have trouble avoiding it, and it requires less heat so may work better with propane anyway (I've never used it but think that makes sense?)