Here is my custom solution to fix the dilution issue.
It works as a setup tool.
Compatible w/ full expansions
Available here :
https://boardgamegeek.com/filepage/139181/arkham-horror-dilu...
http://www.filedropper.com/ahdilutionconfigurator
Instructions in file.
Enjoy !
Original Thread :
https://boardgamegeek.com/thread/1663574/arkham-horror-dilution-configurator-tool