I have a AGN Rattler thermal scope. I have the windage set where I need it but I am high at 100 yds. I want to move the POI down about 1 1/2 inches. So this is where my dumbness comes in. Do I move the “Y” plus or minus? I’ve attempted to move this and it can be really low or even higher. This is nothing like sighting in a regular scope! Thanks