This is my first year raising queens. My first grafts were about 77% acceptance but only about 50% going into the mating nucs as the finisher was not strong enough and I didnt pay attention to the books. anyway they built a large amount of burr comb between the grafts. I am thinking it was because they were about 2 inches apart. What made them do this? I had to cut alot away to expose the queen cells. any help would be appreciated.