Found a solution! For those who have a crappy street fighter anniversary pad, now is the time to give it a good use (finally).
The directional rubbers on it, are too high for the ps2 saturn pad. Not even the side buttons rubbers work (2 small). The solution is on the 6 button rubbers.
The only trick, is to add some strong glue, so that the rubbers don’t get away from its place. Remember to give it a day or two, so that i can dry solid rock. Don’t worry about damaging the pastics, use some soft sandpaper, and clean the glue left overs.
The pad is working 100%, just like new. Here’s some pictures: