You do not need to clear a time w/t.
If you really want to ensure clearing, then before the above PCR where you have ADDZL 9NTE, insert a line in schema calling with PZL. Here check if w/t is 9NTE, if so, do not add the w/t. See lines below
D OUTZLWGT
* ADDZL *
** ADDZL *
*** ADDZL *
**** ADDZL *
9NTE skip to ensure w/t is cleared in ZL