Weber's info is generic....well tested & not inaccurate, but it has to be generic enough for the average ordinary person to understand.......
I been flyin' by the seat of my pants so long I forget even how to ask a question about this stuff sometimes.....
Why.....back in the good 'ol days there wasn't even such a thing as charcoal baskets !!!!
"I had a smoke ring on the meat."
Were you using Blue bag Kingsford's by chance?