Re: Newspaper combine: Provide a top/middle entrance for upper colony?
Prop up the cover just a fraction of an inch to provide "some" ventilation. Popsicle sticks at 2 corners, something that will allow a little air flow but not wide enough to allow the bees to get through.
Doing the combination later in the evening seems to be best time. The bees are not cooped up in a box all day with the sun beating down on them. Usually by morning the bees will have chewed a few holes in the newspaper and are in the process of combining with the colony below.
To everything there is a season....