Tonight, Saturday, April 20 Gunsmoke: “Yorky,” 10 p.m. and 1 a.m. Sunday Yours Truly Johnny Dollar: “Too Much Money Matter,” 10 p.m. and 1 a.m. Monday Suspense: “The Chain,” 10 p.m. and 1 a.m. Tuesday Dimension X: “Time and Time Again,” 10 p.m. and 1 a.m. Wednesday Great Gildersleeve: Marjo