Installing the Footswitch
Here are some tips for installing the 3PDT footswitch in any of the enclosures that come with the kits.
I always like to keep the footswitch at the lowest profile possible on the stompbox. To adjust this, you should screw the lower nut up the threads so that maybe 3 or 4 threads are showing below the nut.
The lock washer goes inside the enclosure and the plastic washer goes on the outside. You should line up the groove in the threads so that it is facing toward front of the enclosure (toward the potentiometers, etc).
When the footswitch is installed, it should like like the photos below.