Thanks for the help. You guys were exactly right. My stove has the 90 degree angle and it does have the built-in cleaning needle for cleaning the burner jet . It was so small I hadn't noticed it before. When I turn it all the way on the needle rises and blocks the jet. Mystery solved!

I had forgotten not only how to operate this thing but also what a great stove it is. I had to laugh when I heard that roaring sound when I got it going. I had forgotten about that too. I did an experiment last night. I left the stove out in the cold overnight and then the next day warmed it briefly with my hand and then cranked the valve open. Sure enough that was enough to get the fuel going and I was able to start it with no priming. I had heard of people doing this but had never tried it.

Great stove. <img src="/forums/images/graemlins/smile.gif" alt="" />