noisy drum brakes on 66 stang...sticking/rubbing sound when stopping

Hi,
My stang has been sitting for about 9 months...brakes worked just fine before that ( although always had a slight pull to one side).
After a lot of help from this form and rebuilding some parts myself; I finally took it into a shop to confirm my work.
The car, after a carb rebuild; ran quite well.
But I noticed that the brakes would have a rubbing/slow rubber style stopping sound.
I wasn't sure what to do. I did not have this problem ever before.
There is no screeching noise that usually indicates the need for drum replacement.
I noticed the fluid reservoir looked quite low (no idea why) and topped it up again; but still same problem.
I have changed the drums a few times before and should be able to do it agian; but i would have no idea what to look for or what I needed to do. I was hoping that it may just need some kind of spray after sitting for 9 months.
Thanks,
Micah  

Hi,
First, assuming you replaced the hardware, drums and shoes. It is not unusual to have a rubbing when applying the brakes, as they are new and will need to be "broken in", both in developing friction and in conforming to the drums. This will take several hundred miles.
As to your own sanity, pull the rear drums and take a look at the "wear" pattern on the shoes. When new, most likely, there will be high and low wear areas on the shoes, not uncommon. Also, when shoes are replaced, it's typical, one will clean the backing plate and add just "touch" of a high heat grease to the rubbing pads where the shoes make contact on the backing plate. This aids in their travel. Something to consider.
As to "adding" brake fluid, why? How was it lost? Look for leaks at the cylinders, bleeder screws, seepage from the rear of the master cyl. etc. If you have a pwr booster, you may be seeping fluid into the booster, if losing fluid past the M/C seal. More things to consider?
Happy Motoring!  
Ken
RestoMod 64.5 Mustang cvt.