Found #2551 A3 door actuator having heav ~~~~~ #2551-A3 door actuator grease packing castle nut area air leak. Tighten a bit more-Result in no more air leak detected. Security check-Ok. Perform door Open & Close check at site-All doors able to Open & Close in synchronization. Perform door gauge check 10/20 mm & 20 cyclic time check -DIR & DMI-Ok.   M.Haziq / Budiman. 14.08.2022.