I had the great pleasure of meeting Alan Harris today. For those that don't know, Alan is the handsome bloke in the Supertrooper Test fitting photo shoot.
He was telling me that at that test fitting the Flame thrower on the left gauntlet was a working model, and they even fired that thing up, Wow! Fueled with gas from the jetpack, which I guess confirms the gas connector greeblie 100%. He was also telling me that as he understood it the character was intended to be a good guy at that time, 4 months before filming ESB started. Interesting. Great story I thought I would share.