Snap: 1644 A3 door not proven closed. ~~~~~ Snap: 1644 A3 door not proven closed. CE: 1644 A3 having whopping sound when opening and closing.  1644 A3 door no door FC registered. #1644 A3 door found both door leaf outer roller delam. Replaced all 4 rollers. Cleaned J-rail as preventive. Door gap 64mm. Door cyclic test OK.  Sarma/Alan/Lee PT/Kamarul 45458