As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON FIRST GEAR EXTENSION, NOSE GEAR GREEN LIGHT DID NOT ILLUMINATE AND RED GEAR UNSAFE LIGHT WAS LIT. CYCLED GEAR AND RECEIVED 3 GREEN. FOUND GAP AT NOSE GEAR DOWNLOCK PROX SWITCH EXCESSIVE. ADDED SHIMS AS NEEDED IAW DC-9 MM 32-60-01-2-0201. OPS CHECKED GOOD IAW DC-9 MM 32-60-00-2-101.