I tried quite a bit, at least 20 variations. I didn’t record all. Just one example:
“C:\Program Files\Hugin\bin\enfuse.exe” --exposure-weight=0 --saturation-weight=0 --contrast-weight=1 --hard-mask --gray-projector=l-star -–contrast-window-size=5 --output=have78.tif abd*.tif
That image is about as good as I managed to get it: