ORFORDVILLE—Mike “Fat Cat” Carroll peered in through the grimed-up front window at Sather's Service on a rainy Wednesday morning in Orfordville. Inside, he saw some old buddies, Chris Speich and Norm Ahrens. They were seated in worn chairs beneath fluorescent lights with traveler cups of coffee clutched tight. Speich, dressed in Big Key denim overalls and a Speich Oil cap, sat yucking it up over some early-morning wisecrack he'd just made. Outside, Kevin Wellnitz, a 28-year-o