Had one of the things, never did get it to run.
I think the worst of the non-runners was the "GHQ". It must have been about a .60 displacement, die-cast, coil, battery & spark ignition. These apparently were even made during WW2. Shortly after the war, a friend unloaded one on me for $5. I never could get it running until, around 1948, Glo-plugs came out. I had the engine mounted on a bench with a new glo-plug and the tank filled with glow fuel. A couple of flips of the prop, the thing ran all-out for a couple of minutes and evidently wore itself out. That was the first and last engine I ever owned. I stuck to rubber power after that.
I had the same luck as you.