As AllenF asked, how much honey do your brood boxes have? As for the honey super, I would pull it if you haven't already. The temps are dropping in your area and it's just more room for them to heat.
One quart of syrup every four days isn't a lot for a hungry hive. I'm tempted to say they've been living off something in your area. If the stores in your boxes are light, then maybe there has only been enough coming in to feed everyone, but not enough to store. If that's the case, then maybe that source is starting to dry up, hence being a bit more defensive of what they do have. If so, they should start taking more syrup soon. If I have a hive that needs some prompting, I sometimes add peppermint tea to the water before adding the sugar to make it more appealing.
Having had queen issues this year, I also agree with Hethen - if your queen is a good layer, I would try to eliminate all other reasons for the hives' attitude before requeening, i.e., dearth, robbing, skunks, raccoons, hornets, are they queenless again (if so, is there a supersedure?), are you in the hive too much, and I'm sure many other reasons.....