I went through the rear drums one more time this past weekend. My concern has been with the overall mediocre brake performance. I tow a small Bass Tracker boat and the brakes seem inadequate, the rears don't feel as if they are contributing much. I replaced the wheel cylinders and all of the hardware.
The brakes were adjusted correctly and I have not manually adjusted them since I replaced the shoes and hardware 5K miles ago. It appears that the self adjusters were working.
I did notice that both wheel cylinders were weeping slightly. I did not see any brake fluid dripping, but the seals were slightly wet and fluid was weeping past the the cups. The self adjusters did work when I pulled on the cable and did not turn the adjuster backwards. It seems that once the shoes were adjusted correctly the cable receives just a tiny bit more slack and when the adjuster is actuated it does not ride up the star wheel as far, so it does not rub it as hard on the down stroke.
I tried to reposition the bottom return spring to rub on the star wheel, but the only other hole/configuration would put too much stress on the star wheel and spring. It seems they are working correctly. I may have a slight fluid leak from the RE brake line. Its hard to tell if its gear oil or brake fluid. I took the vent screw out and used some sealer on it and cleaned the housing. I will have to keep an eye on it.
The drum brakes are more complex then disc brakes and not my preference. Although on other vehicles I have had good results with them. I need to check the fronts out one more time and take a good look at the master cylinder. I appreciate all of the replies. Thanks, Andy