Textures missing or wrongly scaled on revit import

When I import a model from Revit to Unreal Studio using the Datasmith Revit plugin, Some textures, particularly on roofs, are either missing, or have wrong UVs.

In the two pictures I’ve attached, you can see a big difference, particularly in the roofs, between the two models.

This is using the exporter version 4.21.E3, and unreal datasmith plugin 4.21.0