As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND FUEL SERVO COULD BE MOVED BY HAND SLIGHTLY. ATTACHING NUTS TORQUE STRIPE INDICATED NO BACKOFF OF THE 4 NUTS. SERVO IS MOUNTED ONTO AN ISOLATION BLOCK WITH 2 EA, PN 66224, GASKETS. FOUND NO DAMAGE AND INSTALLED 2 NEW GASKETS, TORQUE AND RECHECKED 14 HRS LATER AND RETORQUED. SUSPECT 2 GASKETS AND ISOLATION BLOCK COMPRESS AND CAUSE LOSS OF TORQUE. BY RETORQUEING SOME HOURS LATER MAY HELP. NO SPECIFIC PROCEDURES FOUND IN MM.