I just replaced the TV on my 2014 Sundance this morning. This unit has a bracket on the wall and a mounting bracket on the back of the set, connected by an arm about a foot long. On each end of the arm is a hole with a bolt and locking nut about 3/8 diameter fastened to the two brackets; used a 5/8" wrench to loosen it. It pulls in and out pretty hard and I think the adjustment is just a matter of loosening or tightening the bolt. You might look back there to see if it has a similar set up.