TIMS showed obstacle detected at car 1627, A1 door. Staff (KRJ) checked and confirmed door unable tofully open by around 2 cm. ~~~~~ TIMS showed obstacle detected at car 162     #1627-A1 door check and found bottom guide rail very sticky in between the door and bottom guide rail.Cleaned up the sticky stain and do function check and cycle test all ok. Done by Jack/Sateesh/Koh. 27/05/20