I saw a tip on ATK some time ago on how to test the power of your burner. He put some water in an aluminum pie plate and let it come to a boil. IF your water boiled in "x" amount of time your flame was correct for whatever. This is hard for me to explain (obviously!) but if anyone saw it they know what I am trying to say.
I don't remember the exact procedure which is why I am posting this
Thanks. Hope this doesn't sound too incoherent :)