Rear brakes on 66 dart NOISE and stutter?? HELP

update: I removed the rear pass side drum, upon inspection I noticed a strange wear issue on the edge, like a bump or divot or something not right. Ordered a new drum from Oreilly, then took mine to them for exchange (2 year warranty, and I had 1 month left). Reintalled and seems to have solved the issue. not stutter and no noise. As I tested it out, I notice that if I go in reverse, get a little speed then slam brakes, I skid (lock up) from the front wheels. is that normal. I also had to slam brakes driving around town as I almost T-Boned a **** head that tried to pull out in front of me at an intersection, he had a Stop sign, I had no stop sign, I skidded from the front as well. thanks for your help guys.
I had only put about 1500 miles on these brakes, BTW.
If they are properly adjusted, the skidding should be reduced, and be more uniform left to right, and front to back