Darren, Just to confirm, your brakes are still the original Huck style and haven't been upgraded to later Bendix style??? From what I can see in the Shop Manual, that is not the only adjustment point for the parking brakes on the 1948-50 Huck parking brakes. See page
5-22 and the "PARKING BRAKE TOGGLE LEVER ADJUSTMENT" along with Fig. 45 that details a required adjustment anytime the rear shoes are installed/replaced. Seems like this must be done after the brakes hydraulic adjustments are done and before the cable adjustment. Hope this helps???
