Train doors at car Rear DT car were notproven closed at PSR2 and TAM2. TC recycled train doors once- ok.SIM staff confirmed, Rear DT car B4 door was slow inclosing at SIM2, at subsequent stations all was normal. ~~~~~ FOUND 3625 B4 DOOR ROLLER RHS WORN OUT.C/O NEW ROLLER  FUNCTION TEST,SECURITY CHECKED OK. DOOR  OPEN/CLOSE TIMING WITHIN CRITERIA.RAGHU/HAKIM 13.06.2022