I know nada about an Anderson.
I do know about a B&W though. It 'clanks' when closing on the king pin and the release handle is tight. If that release handle isn't tight but loose and floppy, the king pin isn't locked. I always do a pull test with chocks in place to reduce bending stresses on the puny Lippert landing gear plus a visual inspection. The only time I 'tested' the now seldom installed Bed Saver is about the third time I used the last 5er and when I neglected to chock the wheels. The 5er rolled back when I released the hitch.
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