Thanks for the replies.
I called Remco, and I have to get them pics of the differential and go from there...they also asked to see the whole car
It is not towed or would not be towed 4 down, on a dolly instead.
Had thought of unbolting the U-Joint, but what a pain that can be, not too mention dirty at times.
Not that we would take this car all the time anyway, we have an 07 Pontiac GT G6 Hardtop Retractable that we take 99% of the time, but it sure would be nice to be able to load the Merc on from time to time.
Will let you know what Remco has to say, once I get down on the ground and back up again from taking the pics