Mick,
I've used Coleman single burner stoves for over 45 years. About 15 years ago I converted from the old style to the newer Dual Fuels. NEVER burn anything in it but Coleman fuel or refined white gas. Automotive fuel will plug the generator quickly. Use it in emergency only.
In the last 7-8 years I've had more difficulties with the stoves than ever before. The foot valve on the bottom of the pump will once in a while leak, spurting raw fuel out of the air hole. UNSAFE in the extreme. It has to be replaced
Generators now are made more cheaply than ever before, and last only a short time. Expensive. Leathers on the pump are no longer leather, so they last only a season or two instead of 10-15 years.
It pains me to send this report. I've always counted on Coleman; they were dependable in the extreme. Work in any weather, at any temperature, and at any elevation. Now, I no longer have that deep trust for them.
I now use the LittlBug stove
http://www.littlbug.com/stories.html It is simple, lightweight, and works. No moving parts.
There are many twig stoves out there. All pretty similar. A tall tin can (#3=1 qt, #10=3 qt) can be made into a nice twig stove in about 10 minutes with a pair of tin snips. Make a new one every year.
I have a small, hand-held fan that runs off 2 each AA batteries. Can as easily use a blow tube as described in some of the twig stoves. Zip stove has its own fan.
Nimble Will take apart stove is nice, but I would make it with a smaller footprint and taller sides for better draft. Manji Mike likes it very much the way it is.
You can also dig a small, conical hole with a small trench for air feed off to the upwind side. Blocking-opening this opening can offer control of draft.