J,
Don't know what carb you are running but I would check either on the net or a large bookstore for books on your particular carb.
By the way, that Demon sheet is very helpful as a fine tuning guide; especially with your symptoms. It is usually an imbalance between the floats, idle mix and butterfly settings. However sometimes you will get that stumbling at light throttle because of debris in the carb.
Doing basic Google searches like the two below will get you some good sites.
http://www.google.com/search?sourcei...gine+tuning%22
or
http://www.google.com/search?sourcei...lley+tuning%22
Here's one on tuning with a Demon Carb
http://www.4secondsflat.com/demon101.html
Roscoe