What was found
MAIN CABIN DOOR WILL NOT OPEN HAD TO EXIT THE AIRPLANE THROUGH THE EMERGENCY EXIT DOOR. FOUND TRIM PIECE GETTING STUCK ON DOOR FRAME. REMOVED AND PROPERLY INSTALLED DOOR TRIM, IAW EMB300 MM 25-23-04/400. OPENED AND CLOSED DOOR SEVERAL TIMES, CHECKED GOOD EACH TIME, NO RUBBING OR BINDING NOTICED.