Cesium Moon Height Data Reading

Hello, I am trying to read out height data from the Cesium Moon terrain wherever a raycast intersects the terrain. I am using the CenteredFixedToLongitudeLatitudeHeight, and I know that the height reading it gives is height from the ellipsoid. However, when I compare these height readings from Cesium to the LOLA 1024ppd Elevation (which also uses height from the ellipsoid), the Cesium readings seem to be offset by a large amount, around 2500m. I am trying to troubleshoot where in our project this discrepancy is coming from, but I’m having trouble. Is there something I could be missing that is causing this?
For reference, I am working in Unity 2021.3.22f1 with Cesium for Unity v1.14.1.