I bought an FK-2001 about a month ago for a buck at a thrift store. It's working fine for the most part, but certain key combinations won't work together, like W+E, then the space bar won't work. When I'm holding ctrl, I can only hold S, can't do S+A or S+D. Naturally, for typing this isn't a problem, but for gaming, it's a pretty big problem. Is it just the board, cheap 5 pin din adaptor, goblins?