Sounds like mine is the same way, do have to push hard and see the plastic on the tv flex before it snaps in place. If you hold the chain down and push it against the wall then let go of the chain you are not pushing so hard.
2007 Toyota Tundra Crewmax LTD 4x4 5.7l w/4.3r 381 hp and 401 lb-ft of torque
2012 Jayco 32BHDS
Me, Wife and 3 kiddos