plate relative to the door jamb before tightening it on the door jamb in the embodiment of fig3 and 4 the displacement track comprises two elongate slots 30 disposed in end to end relationship along a common axis on the attachment or vertical side 26 of the adjuster plate the elongate slots are configured to mate with fasteners 34 such as bolts screws etc associated with the door jamb the displacement track is preferably configured with a maximum displacement length l at least as great as the width w of the gap 20 between the door bolt 16 and the door jamb 18 the extreme positions of the adjuster plate 24 relative to a single door bolt are shown in dashed lines in fig3 the flange 28 is oriented at an angle u03b1 relative to the displacement track also the common axis of the elongate slots 30 so as to provide a slanted face 36 this angle may vary but is preferably from about 5 u00b0 to about 20 u00b0 the benefit of this configuration is that when the adjuster plate is moved linearly i e vertically along the displacement track the common axis of the slots before tightening the fasteners the slanted face 36 of the flange 26 translates laterally to fill the gap 20 between the door bolt 16 and the door jamb 18 once tightened in place the.