Well, after using a heavy magnet to locate the existence of a metal mounting plate on the back wall of the 323bhs, the only area where the magnet was able to connect (and very strongly) to the wall was the very left side of the area where the TV is to be placed (opposite side where the cable and AC outlets are located. So, I just decided to cut part of the TV base (which is rounded) so that it would fit the rectangular, narrow area where the can sit. Mounted with screws and drilling a small opening below the TV base to access the TV release, just in case I need to move it.
There seems to be some discrepancy regarding whether a TV mounting plate exists in the bunkhouse of the 323bhs, as I've received differing answers from the dealer and manufacturer. These is no doubt about the plate in the front bedroom, as it's clearly labeled on the wall. And my magnet was able to clearly locate the outline of the metal plate. Still wondering?????