Just as an aside - back in the '40's when we were first learning how to run Glo plugs, Ardens & Champions, a lot of experimenting was done using white gas, sae 70 oil and Nitro-Propane. Yes the old Forster 29's ran well on it, but of course, control line had no use for idle. Has nitro-propane been banned by EPA ? Might be an interesting experiment.

Phil Heller