Burr comb, yes, 'still an issue for me
. I try to rotate it out (& then up), giving them "fresh" frames along side the brood nest. 'Problem being they build straighter comb when it is sandwiched by (already) straight comb.
'Sounds like you have a good plan, raising the burr/brood up above an excluder. Pack new foundation as tight as possible. As an added benefit, you should see renewed "interest" in drawing out the super, once it is "seeded" with some brood. Move the burr to the outside as soon as all the brood are hatched, so they don't "pattern" the burr comb in your super.
Providing restricted feed syrup will encourage them to continue to draw comb between flows. It may take a few years to get all nice evenly drawn combs. (be patient).
Every year I shuffle 2 new frames of foundation into several of my supers. It is occasionally a battle to get it drawn out straight, but those good new ones give me some latitude.
'Sounds like you have a good plan, raising the burr/brood up above an excluder. Pack new foundation as tight as possible. As an added benefit, you should see renewed "interest" in drawing out the super, once it is "seeded" with some brood. Move the burr to the outside as soon as all the brood are hatched, so they don't "pattern" the burr comb in your super.
Providing restricted feed syrup will encourage them to continue to draw comb between flows. It may take a few years to get all nice evenly drawn combs. (be patient).
Every year I shuffle 2 new frames of foundation into several of my supers. It is occasionally a battle to get it drawn out straight, but those good new ones give me some latitude.