As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CONTROLS FELT VERY "MUSHY" WITH A LOT OF SLACK BETWEEN YOKE INPUTS AND PLANE REACTION. UNRESPONSIVENESS OCCURRED IN BOTH PITCH AND ROLL INPUTS FROM BOTH CAPTAINS AND F/O YOKES. INSPECTED FLT CONTROL SYS IAW 27-31-00. NO FAULTS FOUND ALL WORK DONE ON W/O 157375.