well just bought a new 2007 titan, and i thought they had the diff problems fixed after the 05's but i see that some 06's have blowed

you think after all the problems they would have figured out the cause and corrected it by 2006 ? now i'm concerned about my 2007 ! do the 07's have a different rearend or are they the same old CRAP ?
BTW- how did you guys break in your new Titan ? wait so many miles to get on it and just ease around for a while ? give me some advice on breaking it in !

Thanks, Rodney