Hi Andrew,
My dad is in the hospital in ICU so I haven't visited the forum in a few weeks now. I haven't tried RysiuM's method (I used ignition) and so I only have that to draw on. I did break the last SuperTigre G51 in on Gasoline/Oil. I did use Super Unleaded but I don't think it would be necessary if the compression isn't raised as I have done. I broke it in on Redline and have been running it that way ever since. My first, the little 40 had glow time for breakin and I also ran it on Pennzoil Two Stroke Air Cooled when it was a gasser. I am not a home right now so I can't give the needle settings for Gas but if memory serves me the 51 is running with the idle needle in about 1/2 round in from where it ran best as a glow and the main needle is backed out about 3/4 of a round from all the way in. Both needles are much more sensitive than when running glow but managable.

P.S. I answered this on the forum instead of the PM for the benefit of others who might want to try it. I wish you the best in your experiment.