Thanks, everyone.
I don't think I need a 4x4 both for the price and the fact I only used it a couple of times with the TCer and honestly if I would have been without I would have got through just slower and maybe with some digging.
As for the dually rear it is something I am not happy with but 90% of the units that are out there have them and switching to super singles is not an option as it would require major changes to the RV.
Yes, I know this is a truck camper forum but most of the other forums (A, B & C) don't have people that use there units in bad weather or that modify their rigs. I consider my use of an RV is closer to what the TCers do. Also this is where I saw the thread on lockers.
Thanks again.