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@cazzy-and not even a emoticon...(a whole 'nother story...)@johnmitchell-welcome aboard and enjoy the journey. WRT the lump and your temps...dome thermo calibrated? And a recent Wicked Good Weekend Warrior (WGWW) buy or older as they (WGWW) had a very poor quality control problem around 8-10 months ago-since fixed. FWIW-
Used lump will take longer to get up to temp... and won't go as high as lump that has never been burned (It takes less time to get "thin blue", though.