Crumbling connectors.

Well, it appears that I have a major issue going on with the Basketball cab I just got. I got the controllers to work, then after adjusting the switches on the board to free play, the left start button quit working and the right track ball quit detecting left and right motion. I blamed this on the main controller connector as it seemed a bit crappy looking inside. Turns out this might not be the real issue. Upon unplugging the board again, I was surprised to have small pieces of the plug connectors come raining out into my hand. About 4 or 5 of the connectors in the board plug had disintegrated! Now, how can I go about repairing this short of replacing the whole harness? I assume I can get these connectors out of the plug if I know how and possibly replace them. Should I do that, or try to find a better harness, if one is even available? Either way, I'm shutting down the project for a while until I get some bills paid. What started out being a simple cleaning and controller rebuild is starting to snowball.