I actually just tried putting MM WW on a cart and it didn't work. I did toss it in my tester board that has battery save so that could be the problem. I will make another tester board w/out battery and see if that matters. I also found Ms Pacman tengen board does not seem to be a good donor for musha. It worked in tester board but not in tengen board, swapped with a desert demolition cart and it worked. As far as MM WW when I load in the tester board it only loads the produced by Sega screen then black, so later on when I get a chance I will make a non battery tester board.