Hi @CTXBrabbs , thanks for updating the data.
The results are not actually all 0, but a default rendering in GIS might make it look that way because there are some extremely high/low values in the output rasters that skew the distribution and make it difficult to apply a colormap that shows the variation in the values.
One reason for this might be the fact that the input rasters do not have a nodata value defined. For example, if I look at the DEM, all the black areas around the outside should be nodata, but they have a value of 0, which is a valid elevation value, but probably not the true elevation in those areas. Defining the nodata value for each of your raster inputs may the help avoid the extremely high/low outlier values in the output rasters and make it easier to see the patterns in the valid data. Please give it a try.