A Campbellsville native is heading west next month to compete in the 20-kilometer bike race at the Transplant Games of America.For Tom Williams, his journey began with a devastating diagnosis and ended with a second chance at life. Williams says he always enjoyed cycling, especially while living in Houston, Texas."I had a group of dudes that would ride bikes with me, and we weren't too serious, but we rode and had a beer and came home, and it wa…