I am frustrated that you can't make .wsc schemes with px editor???

I want to make my own kaos mod, is it impossible? I loaded wsc scheme into px editor and saved as px scheme and though I changed filename to .wsc it wouldn't work.

WTF? I don't know why you would think that would work. ProjectX schemes have a totally different data format to W:A's own schemes. They're there for ProjectX to insert into the game while it's running, in some cases overriding the WSC file that's been selected. They also usually have a whole lot of other things changed that aren't possible to change in a WSC file. Renaming a file does not automagically change the data format. You probably could make a kaos mod, but you'll need to have ProjectX running for it to work.

You can attach a WSC scheme to a PX scheme (with a button on the top of PX Scheme Editor). Then when you choose your PX scheme in game, the attached WSC will also be loaded