Train doors at car 1521 were not provenclosed. TC recycled train doors to no avail. ~~~~~ 1521 train doors were not proven closed. Level 3. TC recycled train doors to no avail. L3 1521 ER showed TC recycled doors multiple times. Checked/found #1521 B2 door LHS top weather strip dislodged. Replaced with new rubber strip. Cyclic test - OK. Checked J-rail, FOD, door resistance test & door gauge test (10/20 mm) - OK.  Lee JC/Kwa ZY 44564