What was found
L1 DOOR MAKES A GRINDING NOISE AND IS DIFFICULT TO OPEN AND CLOSE. GROUNDED - YES. WHEN INSPECTING L1 DOOR NOTED FWD BULB SEAL MIDDLE SECTION CUT. CUT EXTENDED INTO FWD RETRACTABLE FLAP AND DOOR FRAME SIDE STRUCTURE REF AMM 52-09-00. L-1 DOOR REQUIRES GREASE. LUBRICATED L-1 DOOR PER AMM 12-25-11-640-801. ACCOMPLISHED L-1 DOOR SYSTEM TEST FORCE CK GOOD NO MORE NOISE COMING FROM L-1 DOOR, DOOR OPERATES SMOOTHLY REF AMM 52-11-00-700-804, REPAIRED L-1 DOOR FWD MIDDLE SECTION BULB SEAL REF AMM 52-09-10-35-803, REPLACED UPR & LOWER FLAPPER SEALS REF AMM 25-21-31/401.