I tried this idea on my Poulan 25cc. It already runs good and idles below 2000 rpm (without glow power) but I wanted to see what this 2% nitro can do for my engine.
So here is my mixture:

1 oz Sig fuel (18% oil, 15% nitro)
2 oz of mure methanol
3 oz pure gasoline.

The calculated result is:
50% gasoline
44.5% methanol,
2.5% nitro
3% oil (like 1:33)

Engine starts by hand but I need to flip the prop APC 17x6 backward, otherwise it starts in the wrong direction (like pusher). Because it is a pistton driven timing (side intake, sitde exhaust) the motor doesn't care which way to turn but I might loose the prop nut. Anyway, the maximum rpm didn't change however idle went well down to about 1500 rpm (glow not powered). But there is a one change I noticed: some kind of pinging sound. On mid and high rpm I heared some kind of high pitch pinging. It might be that engine fires to early. I'm affraid I can loose all bearing quite fast running the engine like that.

Then I thought maybe because of that I can get higher rpm on APC 16x4W. This time engine liked to start by flipping the prop forward. I still could hear this pinging noise and the engine could idle about 1500 rpm (glow not powered). The same as with bigger prop the maximum rpm was the same as on simple gas-methanol mixture. I had to lean the high end a little for this smaller prop.

I guess, I will not use nitro in my fuel as I don't know what the heck this pinging noise is about.

RysiuM