I wound up with an auto-adjust from H.F. for $35. This one has a dial that you can increase the overall darkness. Hope it really works:) Some nice guy was in line behind me and gave me the coupon for it.
Thanks for the warnings on the auto-adjusts. If this one does not darken properly I will get a fixed passive unit.
Old Country All-American Brazos Offset Smoker
Weber Kettle Premium 26"