i don't know about your break-in process but mine was 4 tanks at idle 5th tank slow driving 6th tank tuning..

I've had nothing but problems with my 7.7 since i got it. i haven't drove it more than 5 times. any time i try to deal with cen they do nothing but call me a lier and downgrade me including the manager Kenny Wu.  However; they have replaced my center differential, steering servo and rear drive cup.  

the sieze problem just happened to me. it was the connecting rod that shattered and trashed my piston and the inside of my crank case.  they told me to send it in and they would replace it and now i can't get them to send it back.  i've already went to a lawyer and we are filing a law suit.

but for you it might be a different story. you might not have any problems with them. i would definately call in  and make sure you tell them you are under warranty ( if you are ) and if you aren't under warranty don't even bother calling them. you can get a new engine on ebay for $155.

Good luck!