TC reported his train door at the FrontDT car 'B2' door did not open at BSH and BDL SB. Staff (CTH)to check and confirmed train door did not open at CTH SB. S taff(CTH) later proceed to isolate 'B2' train door in closed ~~~~~ TC reported his train door at the Front     Check FC-933 CLE on #3602-B1 door,no FOD found on B1 & B2 door.During function check B1 door unable to open (DIC in normal position)Manually open B1 door observed LHS door was wobbing due to roller damage-replaced.Check mating strip,push/pull,DCS,DLS red line all ok within criteria.Door cyclic and static test ok. Done Sanip/Koh. 01/01/23