So i took my '53 3100 in to Les Schwab(tire/alignment shop) to have them look and see if everything was lined up right because when i take corners it starts to shimmy/shake/and sound as if the tires are fighting. Everything came back perfect and the guy asked me if i had a "posi rear end" and that he had an older truck that had a posi rear that went goofy on him. I don't have much knowledge and zero experience with this. Any suggestions for checking/diagnosing? It sounds as if there's some sort of clutch plates in the differential and maybe some springs are shot? Ohhh being a newbie :-)
