John, heavier guage steel is bound to help hold heat. I never did a before & after test on mine. When I got the Bandera last April it was a complete rust bucket. I found this site and one of the Brothers hooked me up with his welder friend. The rest is history.
One of the things that I have been meaning to do is add firebricks to either the firebox side or cooking chamber side or both. That's bound to hold heat as well.
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Cat Sass BBQ - Competition BBQ Team
Community Development VP - Secret Squirrel Society (but we don't exist)
Member: KCBS. CBJ
New Braunfels Bandera - refurbished; Two Big Green Eggs; 6' fire pit; Weber Kettles; Superfast Blue Thermepan
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