yeah fitting it for aluminium wire - 1mm stuff. yes brass no, no ferrule on the teflon liner. gas valve is brass. was hoping you can by another ferrule?
sorted it think, about to have a go in a bit. I carefully cut round the ferrule and took the crimped bit off freeing the threaded part to be use on any liner. Everything seems tightly in place.
Think its worth getting a cheap ebay spool gun purely to save the aggro of swapping over when you want to do steel or aluminium. next 75 quid won't be missed is going on one.