Hi there....
Well its a kinda bad problem you got there.
BUt what i recomend you to do is either mail someone at Sega and explain to em your problem, and maybe they will point a few fingers where you can turn. another solution might be if you go down to your local game shop where they sell dc and Games. I think you should be able to order a new lazer via em. Not sure

Sorry about that lazer dude

Good luck