0WR7-0L2
If you are using the optional booklet finisher, and you notice that the saddle stitch position of the paper is not exactly in the middle of the booklet, use this setting to adjust the saddle stitch position.
1
Press 
<Adjustment/Maintenance> <Adjust Action> <Change Fold/Stitch Position>.
<Adjustment/Maintenance> <Adjust Action> <Change Fold/Stitch Position>.2
Select the paper size you want to adjust.
3
Adjust the saddle stitch position.
4
Press <OK> <Close>.
<Close>.