Make sure the location selected also matches where you are mining (and make sure tin is selected in the drop down, even though you are using custom rocks)
Will need to see your configuration otherwise
Fatigue exists, you have the option to turn it off in the GUI.
As far as mouse profiles go, best the script has at the moment is saving different configurations for different drop patterns, I may look to improve this further later on
It won't be able to solo, though I'm not sure what you mean by compete, it will just do what it needs to do to win and get a reasonable amount of points