1)
What is the significance of the statement "Vayasimu es ha'Chalavim al he'Chazos"?
1.
Rashi and Ramban #1 (on the Pasuk in Tzav, 7:30): After waving them, the Kohen placed them into the hands of a third 1 Kohen, so that the Chalavim were now on top.
2.
Ramban: The fat-tail and the kidneys now lay on the chests, with the Chalavim on top whilst they were burning, and it is Derech Kavod to burn them when only the Chalavim are visible.
2)
Why did the Torah mention only the burning of the Chalavim on the Mizbe'ach and not the Alyah, the Kelayos and the Yoseres ha'Kaveid?