Found that the lid wants to "stick" to the barrel with buildup from cooking. After the last contest, I came home and took a look at both the lid and barrel -- new cleaning method.
Using a plumbers torch, heat up the barrel 4 to 5 inches at a time, as the material soften's follow by wiping with a paper towel -- please remember this stuff is hot.
This turned out to be an easy fix as the plumbers torch is how we light are Kingsford, always better when one tool does 2 or more jobs