I had the same problem with my 49. It turned out to be 2 things, 1, it had 1 bad tie rod end and, 2 the rear leaf spring bushing(on the same side) and pin of the front leaf spring on the right side were worn out. (the bushing was worn to the spring)
Keep the 216's running. 1949 1/2 ton model #1314 (US 3104) Brian