Please show an example of the records in each input file (relevant fields only) and what you expect for output. Explain the "rules" for getting from input to output. Give the starting position, length and format of each relevant field. If file1 can have duplicates within it, show that in your example. If file2 can have duplicates within it, show that in your example.
Also, run this job and show the //SYSOUT messages you receive, so I can see what level you're at: