mmm sounds like the info the guy at the dyno day for oz dat was wrong, he said was running lean, told me to richen it. Took it back for a tune to richen it and af mixtures were ok. Made it richer and drove like a bag of poo. I lean it off agin with mixture srcrew where it was(he marked it for me in case was cra) and better.

Sounds like im having the same dram mixtures as you did with the twin lpg set up. cant get lean enough