Mixture screw 2 turns out.
dont over tighten mix screw first, can damage tip and will never tune well afterwards.
Set idle at 650 + - 50.
Adjust timing for lpg I assume, say 15 deg.
choke, you'll notice a mark on choke cover black plastic between the words rich and lean, and also a mark on alloy mating surface, default choke setting they line up.
see how that goes from there.
cheers