RE: mixing fuels
MetallicaJunkie,
I should have said: "Yup....assuming both the FAI fuel and the 10% fuel are good commercial grade fuels."
The 1:1 mix ratio will yield a 5% nitro blended fuel.
FAI fuel is 20% castor.
Your 10% fuel should be at least 18% oil (castor or synthetic oil blend).
When you mix your fuels you should limit the liquid exposure to air as much as possible. Avoid air exposure under humid conditions.
Regards
JC