Hi JUCD VPR,

Ok, this is going to be very short, sorry - Plane to catch (will be back on 1st may).

CEN Genesis / Nemesis / GST all come from factory without lock block fitted to their center diff. They instead have a grease / oil around 100k wt in all 3 diffs.
So it is conceivable that you have infact fixed your only problem. Because as I previously stated & air1kdf confirmed, when the center diff is unlocked, 99% of all driving force will go out the path of least resistance. ie. your broken drive. (not to say this is your only problem, but most likely it is).

Warranty claims in the first place should go through your seller, so give him a call, & get that claim under way! Failling his action, you could try CEN Racing - contact section of their [link=http://www.cenracing.com/main.html]web site[/link]

Once you have fitted your new diff, give her a quick inspection, even using my previously posted check list (by hand for 1st gear will do), & if she checks out ok, take her outside & give her a gentle run. You will soon know how you went!

Good Luck, .46NitroAddict[>:]