3609 B4 and 1609 A3 door rollers faulty. ~~~~~ 3609 B4 and 1609 A3 door rollers faulty.  1609 A3 door & #3609 B4 door checked/found both LHS & RHS outer rollers delaminated & inner rollers loose.    Replaced all the big rollers. Cleaned J-rail/guide rail, weather strip in good condition & no FOD found. Door cyclic test & door gap 63.9mm check - OK. Door open/close timing check - OK. All doors were proven closed & no DIR lit up.  Sarma/Sugu/Alan/Lee PT/Anand/Shafie 45037