Everything matchs the discription from the book excepted what is noted below.
Minor: all damage rolls related to a weakness are at +2 instead of +4
Major: all damage rolls related to a weakness are at +4 instead of being doubled
Continued exposure to your weakness will start to negate all superpowers (remove powers at random, count each step of an attribute as one power and each 2 skill points as one power). If all powers are negated you will remain without the use of your powers for 2d12 hours as your body recovers from the stress.
As long as 1 power remains recover is one power a round (powers come back randomly).