During the walk-around inspection of a combination vehicle's lower fifth wheel, where should the locking jaws be closed?

AAMVA CDL Manual, Section 6.5.1, p. 6-13, Figure 6.8

This is the same critical safety point checked during coupling itself, confirmed again on a walk-around before driving: jaws closed on the wrong part of the kingpin, or not fully closed, mean the trailer is not securely attached and could separate from the tractor while underway.