In our recent post about Baby J's Bar-B-Que & Fish in Palestine, we promised to tell you why Jeremiah "Baby J" McKenzie padlocks the cooking chambers on his brisket pit.   Well, that wasn't the only instance of brisket burglary we encountered on our recent East Texas barbecue tour. Taste and temptation must be the devil's work. Ron Davis, who runs Stacy's Bar-B-Q in Jacksonville, told us that "every now and then" someone breaks into the small building that houses his two big gas-fired smokers and grabs some meat. "They don't wear gloves and the briskets are hot so they…