What was found
MAIN CABIN DOOR IS NOT CLOSING. WE NOTICED THE EXTERNAL HANDLE IS NOT CLOSING FLUSH WITH THE DOOR. BEGAN TROUBLESHOOTING. CONNECTED POWER CART AND PERFORMED OPS CHECK OF MAIN ENTRANCE DOOR MULTIPLE TIMES WITH NO DEFECTS NOTED. OPENED DOOR AND PERFORMED A VISUAL INSPECTION. FOUND INTERIOR TRIM SPACER ON FWD DOOR STOP STICKING OUT AND POSSIBLY INTERFERING WITH DOOR. REMOVED INTERIOUR TRIM FROM CABIN DOOR SURROUND STRUCTURE. REPOSITION TRIM SPACER. INSTALLED TRIM. PERFORMED MED OPS CHECKS WITH NO DEFECTS NOTED. OK TO RETURN TO SERVICE. WORK IAW CE-680A MM 52-10-00.