Loopman,
Be careful with only a 9% oil content. I personally will not run below 12% oil content. I homebrew my own ST fuel. The recipe that I use is 20oz oil, 6oz. nitro, 102oz of methanol. This gives you a 15% oil content and a 5% nitro content. I use Klotz Techniplate synthetic for methanol. You can get the Klotz from Sig. The St will run well on no nitro just cut the oil back about 2oz
Cubfan