Hey all basicly trying to play on system link with my RGH + retail. But for some reason it won't connect. It works fine on the rest of my cods, ( WAW MW2 MW3 ) I've check to see if the TU is correct which it is latest TU 12. The little tiny number are the same and so is the dash 16602. I've nocited however that my NAT's are not the same. RGH = Strict Retail = Open Any help would be appreachited thanks.