The next step from the wiring section (31B-10) was to wire up the wing spar pin switch, but that means I need to complete the spar pins, so it's back to section 30. The first step calls to create a 14" tube to insert into the bushing. This looked challenging, so I decided to just use a razor blade to cut it once it was already in the bushing. This worked well.
slide tube into bushing and then cut to size with razor