I have a 2008 Town and Country set up with a Blue Ox baseplate and a Remco transmission pump.
If you do a search you'll see some of my problems over the years.
In summary, with a DP, the heat off the motorhome engine does not allow the T&C to properly cool the transmission fluid and you start to lose suction in the pump as the hot transmission fluid foams. If the outside temp is low (under 75 degrees) or it is raining, all is fine. Once the temp goes higher on a dry day, you will not be able to tow the T&C without having the Remco pressure monitor in your cab go crazy with beeping. This usually happens after about 1-2 hours of towing. MANY times we had to unhook and my wife had to drive the T&C separately (she was not happy!).
After about a year of dealing with Remco and not solving the problem, I bought a Jeep Grand Cherokee and now tow that problem free.
I did try to tow the T&C again last March and wouldn't you know it but we had a freak 83 degree day and the trans overheated again!
Tom and Katharine
'07 Winnebago Tour 40TD, 400hp Cummins
RVing for 19 years & 150,000+ miles