Elecraft KXPD1 - Manual (Page 5)

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Locate the two molded rubber grips. Note that the grips have a raised surface detail on one side only.
This surface must be pointing outward when they are installed in the next step.
Slide the grips onto the lever assemblies as far as they'll go (Figure 6). You'll need to compress the
levers in order to slide them into the grips. The grips pre-tension the levers, placing them a small distance
from the silver-wire contacts (the levers and contacts are shown in Figure 6 for reference). The contact
spacing can be adjusted, if necessary, in a later step.
Figure 6
The two remaining holes in the bracket are provided for the captive thumb screw. One of the holes is
shown below in a cutaway view (Figure 7a). Only a small portion of the hole is threaded. This retains the
thumb screw so it cannot be lost, but still allows it to freely move in and out. Figure 7b shows the thumb
screw threaded in past these threads. Place a #6 washer on the thumb screw before threading it into the
bracket. Use only one washer. The lock washer should provide better resistance to vibration in rough use
such as pedestrian mobile operation, but may mark the surface of the bracket around the thumb screw hole.
Figure 7