Train doors at car FM1 were not proven closed. TC opened and closedto clear fault. ~~~~~ 1612 Train doors were not proven closed. TC opened and closed to clear fault.  1612 A1 door fault in TIMS, self cleared in 1 sec. Further check, no FOD found but found door with pulling force of 7.8kg. Found J-rail withb slight dirt accumulation at both door leaves closing point. Cleaned up J-rail & checked door pulling force now at 4.2kg. Function test door open/close operation 50x - All OK.  Selvan/Alcus 44004