Intro and advice.

[dom14]

Nah I know it was 40L cause that's how much I put in haha.

Ok, that's some new news for me. Being a carby TB42, then producing an economy above 6km/L on LPG is super efficient then.
No need to do anything in that case. I wouldn't even worry about Pertronix ignition kit 'cos yours is doing good as it is.

You need to explain what you meant by "super inefficient", be it about LPG or petrol or both.