Muller Martini Pantera

I'm having the following problem with the Muller Martini Pantera Binder. On the touch control panel, there is the option to configure the offset compensation to align the books and the hotmelt glue unit. This compensation offset parameter must be entered every time the machine is turned off, which is really time-consuming to perfectly align the books. I remember that before, it was not necessary to adjust this every time, just to fine-tune. It is like the machine is not recognizing starting position or something like it.

Does someone had experienced something similar? or may someone have some insights on this topic?