The default output record length is now 32,756 bytes for a comma delimited unload. If a different length is required, specify LRECL-USER YES in your hlq.CDBAPARM(PFU) member and in your JCL specify an LRECL value in your SYSREC data set allocations.
In your PFU member(if not there already)...add this line. Create the member if not there.
You could also add this line in your SYSIN in the PFU JCL.