THANK YOU! i've been futzing around with the damn assembly-csharp.dll, and had written off that file as too much garbage.
for people just wanting to play the game and not worry about learning all about hex values, go to offset 1420, change 3d to bd, that will invert you with the default sensitivity.
if you want to mess with it more, i found some conversion help here:
http://pcgamingwiki.com/wiki/Thread:Tal ... below_0%25