Train doors at Front DT car "B" side were not proven closed. TC recycled train doors twice - ok. ~~~~~ 3609 - Train doors at Front DT car "B" side were not proven closed. TC recycled train doors twice - ok.   #3609 B3 door FC 973 CLE Open Close speed pass: Yes FOD found: No Door cycle 20x: Yes Rubbing marks: No Door mating gap: Satis Door Lock Switch red line when door closed ok. Door Lock Switch Cushion Rubber intact: Yes Door Close Switch distance from actuating plate within criteria. Door Wobble: Yes Rectification Actions: Checked guide rails, J-rails on 3609 B3 door satis, no FOD. Found doors to be wobbly during operation. Removed both    door leaves and found main rollers to be delaminated. Replaced both door leaves main rollers with new iron rollers. Door cyclic ok, door static test timing ok. Done by: Rizman, Sanip, Koh, Jack. (14/2/24)