When you installed the rear shoes did you apply Silicone Break Grease (SilGlide) to the proper places?
Did you VERIFY that the pistons slide in the cylinders?
Did you compress the pistons back into their fully retracted position?
Did you reset the Parking Brake adjustment?
Is the Parking Brake Equaliser properly lubricated and the rear cable slides in the Equaliser?
There are three places, for each shoe to rest on, on the backing plate. These areas can develop groves that will cause the shoes to bind. When this happens your options are to weld the contact pads and then grind them smooth to fill in the wear groves or replace the backing plate. The groves will cause the surface of the shoes to contact the drum on an angle. This will be seen as more wear on outside part of the shoe and the drum.
Did you VERIFY that the pistons slide in the cylinders?
Did you compress the pistons back into their fully retracted position?
Did you reset the Parking Brake adjustment?
Is the Parking Brake Equaliser properly lubricated and the rear cable slides in the Equaliser?
There are three places, for each shoe to rest on, on the backing plate. These areas can develop groves that will cause the shoes to bind. When this happens your options are to weld the contact pads and then grind them smooth to fill in the wear groves or replace the backing plate. The groves will cause the surface of the shoes to contact the drum on an angle. This will be seen as more wear on outside part of the shoe and the drum.