Most dodge dealers are denying anything they have an excuse for. They are broke, and will likely try to attribute your t-case leak to your lift, or abuse if they can find any under carriage damage, etc etc etc.
I just went though trying to have a transmission warrentied with dodge for almost a year. Between bad techs, and hard to deal with service writers, I finally traded the peice of crap in because it was never going to get any better and the dealer was just avoiding trans replacement until the warrenty was done.
You might get lucky, but I would be supprised.