TC reported Front M1 car A1 door and Front DT car A2 door obstacle detected when opening. Staff(CCK)feedback no abnormalities with the Front M1 car A1 door. St aff(CCK) feedback Front DT car A2 door slow in opening but s ~~~~~ Open Close speed pass: N FOD found: N Door cycle 20x: N Rubbing marks: N Door Push/Pull force: Cannot open    Door mating gap: 64mm Check Door Lock Switch red line when door closed (should be at half or at most flushed with the step) - satis Door Lock Switch Cushion Rubber intact: Y Door Close Switch distance from actuating plate: 14.5mm Door Wobble: Y Rectification Actions: Found 2618 A3 door LHS outter roller delamination. Replaced both LHS and RHS door rollers to iron black rollers. Door static and cyclic test-ok. DLS lock nut secure. Done by: Haslan and Asruddin