Jim,
Adjusting a gas burner is nomally a very sensitive thing, that you however will learn pretty quick. However, the type of gas you use, will also affect sensivity. Easiest to manage is pure butane (=sold for cigarette lighters). However to run in colder weather (a bit above freezing ca +5C), you need to run on a mixture of butane and propane to maintain gas pressure / flowing. You can use up to 30% propane. More propane than that, and you will have great difficulties adjusting the flame. Propane i also richer in energy, so everything else beeing equal (for example temperature), you will get a slightly longer run with some propane content.
I found the most difficult thing about gas firing, was to learn when the burner was clogged with some minute / "invisible" dirt. If you know you've done everything right (wich is difficult to know when you still lack experience ;-) and the burner still won't light, or behaves irratically - unscrew the nozzle and clean it. I use one of the tiny copper cords from a piece of electrical wiring. You should be able to spot light coming through the nozzle. (Nozzle hole is like 0,2 mm or slightly larger.)
Welcome to a great hobby, offering strong feelings of pleasure, and also accomplishment when you learn to master some new aspect! With experience you will "read" the sight and sound of your engine, and you will know what is going on with your engine. I think our engines are almost as "alive" and complex as a horse, and the enjoyment partially comes from similar senses of "mastery"! Though for some (presumably genetic) reason, women tend to go for horses, while some men go for live-steam engines! :-D
