As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE REPLACING LEFT WING FUEL SIGHT GAUGE IT WAS FOUND THE NEW PART HAD FLOAT ARM INDEXED 180 DEGREE FROM ORIGINAL GAUGE. THIS DIFFERENCE CAUSED FLOAT ARM TO CONTACT LEADING EDGE CURVE AND GAUGE WOULD NOT READ BELOW 45 GALLONS. WHEN ADDITIONAL PART WAS ORDERED, ANOTHER GAUGE WAS ALSO INDEXED WRONG. PARTS RETURNED TO FACTORY.