And to add the trouble of heavy (to my observation) dependance of the ignition point mostly on the Temperature and
as well the glow-plug "state-of-health" etc ... too many factor which seems led to the complicated carbutators of the
real gas engines and consequently to injection systems. Yes, would be nice to have had the lux to spend th money to
get to try the OS engine with the injection and associated electronics....

Well, I measured and tried to many things but it seems Nitro % depends on the Engine Gas-Diagram and associated
Exhaust system (resonance-pipe or just open exhaust or .....) and varies so much than I have to keep very diferent
fuels for different engines and also weather and also glow-plugs and also .... too much troubles out of a hobby.

So I settled with 12% Nitro when I have Nitro at low cost ... otherwise there is nothing wrong with FAI fuel (0%).
Nick