In the last post I wrote than in order for the northern wall of the migrash to end by the northern seam, it needs to be on a different angle than the rest of the walls of Har Habayis. However, I realized that you can make the wall the same angle as the other walls, but say (like by Leen Ritmeyer's opinion) that there was a tower right next to the migrash, and that is why the old part of the wall ends there.
I have added a new video of the Lishkos on the northern side of the first Beis Hamikdash..
My name is Mendel Lewis.
Hashem said to Yechezkel, "Its reading in the Torah is as great as its building. Go and say it to them, and they will occupy themselves to read the form of it in the Torah. And in reward for its reading, that they occupy themselves to read about it, I count it for them as if they were occupied with the building of it. (Tanchuma tzav 14)