I had the same question about the bedroom TV wall support for our 29XK
Contact Jayco via their contacts page with your unit serial number and ask them for the drawing of that wall.
Here's the link
Contact Customer Service | Jayco, Inc.
They were kind enough to email me the drawing of the wall in question in a pdf format. Shows right where the reinforcement
block is, including measurements.
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"The most important thing to do in your life is to not interfere with somebody else's life." ~Frank Zappa
Charlie, Meg and Corky the Maltese Dog
2016 Redhawk 29XK "Corky's House"
Freeport, FL