Here are some links to people that have had the diff. pin issue. Unfortunately it looks like most, if not all, have not received any type of warranty coverage. There’s always hope but even on a stock car they can claim abuse and thus void your warranty at will. That’s why a warranty on an Evo is a running joke on the forums. Plus the dealer can log into your ECU using the MUTTIII and get logs of your RPM spikes or launches.
:conehttp://www.evoxforums.com/forums/showthread.php?t=46307&highlight=diff+pins