As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: FORWARD SERVICE DOOR GUIDE ROLLER CRACKED. REMOVED AND INSTALLED SERVICEABLE FORWARD SERVICE DOOR CENTER GUIDE ROLLER. PER B737NG SOPM 20-50-03. PERFORMED SATISFACTORY CENTERING GUIDE ADJUSTMENT. PER B737NG AMM 52-41-00.