3616 B4 door having rubbing sound during ~~~~~ 3616 B4 door having rubbing sound during     #3616-B4 RHS door roller having rubbing sound during operation.Check and found door roller faulty.Replaced faulty and carried out door cyclic/function test ok.Door mating strip 63.5mm.Door opening 6kgf.Door closing 7kgf. Done by Koh B.S. 05/06/20