Likutei Sichos Vol 09 p 184 ff Class Eight: 1) Discussion about the two ideas of Kidush and Birchas (HaChodesh). They are philosophically opposites. Yet they exist together. 2) Nigla basis for the difference between Tishrei and other Roshei Chodoshim. Rosh HaShana is not (always) a safeik, but two days that are one. Page 188-9.

Likutei Sichos Vol 09 p 184 ff Class One: 1) Introduction. 2) Issue of Kidush and Birchas HaChodesh. 3) Hashem blesses Tishrei with Atem Nitzavim. Page 184 (ch. 1).