Carplay Pin Image Anchor Point

When setting a custom pinImage on a CPPointOfInterest the anchor point is in the center of the image, the default pin is positioned so that the bottom of the pin is at the point on the map as expected

In an attempt to resolve this issue we have modified our custom pin images in code to offset them to add transparency so that the bottom of the pin locates correctly on the map

This however has introduced issues with how CarPlay resizes the icons, we are of course correctly utilising the carTraitCollection to get the information we need for the screen scale of the CarPlay device and using that in the UIGraphicsImageRendererFormat

Is there a way to correctly set the anchor point of a custom pinImage on CPPointOfInterest?