My DS Lite doesn't recognize some of my games. Sometimes the games freeze while I'm playing. When I put one of my games in then later take it out I notice that the little golden parts on the back of the DS Cart are all scratched and messed up. My DS Lite is messing all my games up. I checked to see if any of the pins were bent but they seem fine. I've tested my games on my brothers DS Lite and it doesn't damage or freeze my games. Does anyone know how I could repair this myself (a guide maybe?) or know a place that could for a low price? (Warranty is up & Nintendo charges waaay too much for repairs) Also, how is this caused?