If you have trouble using Muffinhead's Stainless_Steel_Kingdoms.cfg file (contained in the .rar), check the second line in the extracted file. It may think your game is in a different directory. If so, you can change the second line to the directory you installed Stainless Steel to.
Example:The changes are not saved-game compatible. You will need to start a new campaign. Do not open an older save before starting a new hotseat game. Doing so overrides the .cfg file and will make you think it isn’t working. Put another way, if you load a game with scrolls enabled, then start a new hotseat game, the new game will also have scrolls enabled. You have to exit Stainless Steel and re-enter. (If only the overriding worked in reverse!)
I hope the time I spent figuring that out helps someone.
Question: after playing for a day, a new default.cfg file appeared that contains lines similar to Stainless_Steel_Kingdoms.cfg. Are they related? Which one has precedence?