So I just got an incredible deal on a really rare game, Musha for the sega genesis for $4 only to bring it home and I can't get it to work. I tried cleaning it with alcohol and a q-tip then with an eraser, got ALOT of gunk out but it still won't work. I put the game in the genesis and the screen flashes and its just black. If I hit restart the produced by sega.. etc screen comes up but again just black. I have been going at it over and over but i'm limited because I can't get the cart open. I just ordered a security bit and it will be here sometime this week. What bothers me is the screws in the back look rusted and i'm hoping it wasn't damaged by water. If it was is this game unfixable? Are there any other cleaning methods that have worked for you guys on really dirty games?