'83 GS850GL - Rear Caliper rebuild struggles

[Rich82GS750TZ]

Bear in mind my 82 750 T has a rear drum, not disc. So just thinking out-loud. When we bleed the front brakes, it's often helpful to tie the lever to the grip and leave it overnight. Untying the lever in the morning, it will often regain a better, less squishy pull. Can you do the same with the rear? Wedge something between the right peg and brake pedal to depress the pedal overnight or for a few hours and see if it helps?

[Wingsconsin]

Bear in mind my 82 750 T has a rear drum, not disc. So just thinking out-loud. When we bleed the front brakes, it's often helpful to tie the lever to the grip and leave it overnight. Untying the lever in the morning, it will often regain a better, less squishy pull. Can you do the same with the rear? Wedge something between the right peg and brake pedal to depress the pedal overnight or for a few hours and see if it helps?

Worth a try - thanks for the thought