So I just re-downloaded FH in hopes that the game runs smoother on my new computer, and I've decided I really wanna try making a map! Except I don't want to download GIMP and I have Paint Tool Sai instead, but there is (as far as I know) no grey scale mode. When I did save a test height map in just black/white (I saw somewhere it would work) it crashed the game so I'm guessing that's not how to do it. I know there's a way, but can anyone tell me what it is?