O.S. two-strokes tend to prefer 10% to 15% nitro to run at optimal efficiency. Super Tigre and Magnum/ASP are often mentioned as 2-strokes that run wonderfully on 0% or 5% nitro fuel. I fly a Magnum XLS .52A that loves 5% nitro fuel.

It might be possible to tune your .46 AX to run fairly well with 0% fuel if you use a really hot (O.S. A3, e.g.) glow plug, but I don't really know for sure.