[Mitchelkitman]

Do you know that it's not firing on #1? I've no experience of elec control systems like these, but does it tell you it's not firing? Can you look at something which says it isn't (I'm not being flippant, I just don't know). If you know it is sending the correct 'command', then it's a case of why isn't it getting there..... Maybe check plug, lead or more likely? coil pack. Just random thoughts, but hope it helps.
ETA my first sentence wasn't written very well - I can see from the evidence you've given that it's definitely not firing the mixture - my brain was 'in computer mode'.