can't get girls to draw out supers

[forrestcav]

no I didn't give pollen patties. I fed 1:1 syrup, I started that in Feb as the weather was so warm they were out flying by then. I have what looks to be plenty of foragers coming and going.

[sterling]

Pollen is not a problem in our area. Bees were gathering pollen on Christmas day here. We had drones flying the last of Feb. Also had SHB in Feb. So pollen patties may not be a good idea.
You posted once that you thought the hive was going to swarm. If they did, then they are probably comfortable with the space they have in the two deeps. They may not do anything with the shallow between the deeps if that is the case. At least until they build back up.
I have taken deep drawn frames cut the comb out of the bottom to fit a shallow frame leave the upper part for them to rebuild the deep put the cut part in a shallow. You might try two or three of these in the shallow. Sometimes it will get them started in the supper.

[AndrewT]

I've only ever produced comb honey, and I always start with empty shallows with a strip of foundation in each frame.  And it's definitely more difficult to get the bees to move up into those than with drawn comb in a liquid honey set up.

One thing that I've learned is that most times when they seemed to refuse to move up it's because with a healthy colony with plenty of stores in the spring, they may "plan" on swarming and, so, the workers will jam the brood nest with nectar to prevent the queen from laying there.  Then they start to build queen cells.  When that's going on, it doesn't matter how much room you have above the brood nest, they will swarm.  I've had that happen almost every time I've fed heavy in the early spring to stimulate brood rearing.  What I stimulated was, in the end, swarms.  For that reason, I've stopped feeding in the spring unless they have little or no stores, or if there aren't a lot of bees.  I do my feeding in the fall when I do feed.

Other times the bees don't move up because, like others have said, there is just not enough nectar coming in, or (especially if the above happened and they do swarm) there aren't enough foragers.

I wouldn't argue the point that feeding lots of syrup and pollen can build up a strong colony that can gather lots of nectar, but I will say that I only feed syrup when I need to and I never feed pollen, and I do just fine.  Maybe I'd get more honey if I did feed more, but who knows.  I feel that bees were taking care of themselves long before men came along, thinking that they knew better than the bees did, and I think that "coddling" them too much just make them weaker in the long run.