TC feedback train doors not proven closed, Front M1 , A4 door. TC recycled train doors few times to clear fault. ~~~~~ TC feedback train doors not proven close     #3536-A2 door fault able to duplicate in depot,door unable to fully close.RHS door bottom high resistance.Removed both LHS & RHS to service.Found RHS bottom weather strip causing high resistnace against bottom door guide.Serviced door rollers,J-rail,door guide and trimmed weather strips.Checked Actuator,Manifold,EMV and DSS,OK.Door function/cyclic checks ok.10-20mm tested ok. #1536-A4 door checked Actuator,Manifold,J-rail and door guide rail ok.Carried out door cyclic/function test ok.Postulate F.O.D dislodged when TC recycled train doors to clear fault. Done by Joshua/Koh B.S. 14/01/21