Just a couple of questions from a newbie. 1.in reference to the original pics, the cross bars didn't cover to cavity in the log so I am assuming that you would space the bars every 4.5 mm all the way across the cavity and do this on each super. 2. There's no entrance, that I could see for the bees to enter the hive. 3. Like I said before newbie here but would really appreciate some detailed instructions if possible. Searched the web and basically found nothing instruction wise. I happen to have a downed hollow tree that's about 34" in diameter and I figure it would make a great hive. Curious how tall each super would need to be. Thanks in advance