As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOLLOW UP TO MOMENTARY ILLUMINATION OF ELEVATOR FEEL DIFF PRESSURE LIGHT DURING HIGH A SYSTEM HYDRAULIC DEMAND. GROUNDED - YES. FOUND ELECTRIC RECEPTOR ON #1 EDP HAS STRIPPED THREADS,AND LOOSE. EDP REMOVED AND REPLACED OPS AND LEAK CHECK GOOD REF B737-900 AMM 29-11-11.