That kind of error happens to me all the time with legit carts. Try clearing the board's SRAM and see if you get it again. All it takes is the game to be scrambled on the initial boot for the soft dips and title to be all goofed up and saved that way to memory. It will stay that way until the game is bumped from the memory. Also, if you're using a Unibios, make sure you let the game boot at least once before trying to go into the soft dip settings. (Obviously, try cleaning the game if you tend to get scrambled graphics.)