As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE MAIN CABIN DOOR IS VERY DIFFICULT TO OPEN OR CLOSE. THERES ABOUT A 1 INCH GAP THAT NEEDS FULL BODY WEIGHT TO OVERCOME TO CLOSE. THEN ITS SEEMS TO BIND UP AND UNABLE TO OPEN. TOOK AGAIN FULL BODY WEIGHT AND FORCE TO REOPEN. REMOVED MAIN DOOR RUBBER SEAL, CLEANED SEALANT FROM SEAL RAILING. REPLACED MAIN DOOR RUBBER SEAL & APPLIED NEW RTV SEALANT TO RAILING IAW AMM 52-10-20.