Does anyone have any more experience with testing Mario RPG/Kirby SS on this thing? I received my unit on Christmas but had to RMA it because the speakers wouldn't work. Games would load, though, except for Mario RPG and Kirby. I remembered thinking maybe my unit had an issue with special chip games, so I tried Yoshi's Island and that worked too. Of course none of the games had sound.

I'm hoping that when I get my replacement unit, those two games will work. Are some versions of the games incompatible? I think I've seen a few reports from other people who couldn't get them to work but I've seen more positive reports than negative. Any way to tell right now if my cartridges just won't work while I wait for a replacement?