Twin Disc, Incorporated, Cross-Appellant v. Big Bud Tractor, Inc., and Third-Party Cross v. Grad-Line, Incorporated, Third-Party

FLAUM, Circuit Judge.

In this diversity case raising questions of Wisconsin law, we are asked to consider various issues concerning breach of warranty, breach of contract, negligence, and strict liability claims brought by Big Bud Tractor, Inc. (“Big Bud”), a manufacturer of large farm tractors, against the manufacturers of some defective component tractor parts. The jury awarded Big Bud $1.1 million in damages, and the district court entered judgment on that verdict after offsetting the amount that Big Bud owed on account to the component manufacturer. For the reasons set forth below, we…