Defenses. It shall be a defense to a product liability civil action that an alteration or modification of a product occurred under the following circumstances

(1) The alteration or modification was made without the consent of or was made not in accordance with the instructions or specifications of the manufacturer, distributor, seller or lessor;

(2) The alteration or modification was a substantial contributing factor to the personal injury, death or property damage; and

(3) If the alteration or modification was reasonably foreseeable, the manufacturer, distributor, seller or lessor gave adequate warning. [1977 c.843 §4]