Center of crosshairs

I want the pan and tilt for a fixture to have the center of the control cursor to be at the center point of the grid when the fixture is on my center stage.
Currently Pan is close but Tilt is 100% off. So the center of the control cursor is centered on the grid when the fixture pointing straight down. Once I the fixture pointing center stage, my control cursor is a the very top of the grid for Pan and Tilt . Seems like this should be a simple offset but I’ve not found it yet.
I saw some posts about using a default preset and also one about changing the fixture library.
Anyone have a best answer?