When you can move the plate up and down at the front or back. failure is imminent.
I greased mine often, but it still failed. Lippert sent me a trail air bottom jaw, and I'm happy with it.
Elliott & Vicky, and Sadie the GSD copilot
2014 36RE, Onan, Titan disc brakes, 17.5 inch Sailun H tires, lots of other options
2013 RAM 3500 CC, LB, DRW, Cummins, AISIN, 4x4