I just bought the All Session pass for the 1st and 2nd round games at the CTC Box Office. The lady at the ticket counter said that Tech's allotment was in Sections 106 & 107. Section 107 (halfcourt seats) looked to be sold out while Section 106 had 2 seats left after I purchased my tickets. Most tickets in the lower level sections (105-108 and most of 118-121) have been sold.
FWIW, A&M's allotment was Sections 119-121.