I finally got the dual wheels off after lots of penatrating oil. This one has seen alot of saltwater boat ramps. Anyway I have new set of emergency brake shoes but not sure if I have to pull the axel or will the drum come off after taking the 4 backing nuts off the caliper side of drum? Any advice? The book I got at Advanced Auto doesn;t talk about 4x4 3500 dually 6speed