No.........it happens so erratically, so it hasn't happened at all since I asked the question on this board!  Go figure.....

A friend used the rig and 30' gooseneck trailer to retrieve his son's Mercury Mountaineer at Ogallala, NE, 250 miles, (girlin' you know, always trouble ;->) and brought it back with no problems.  He said it pulled the trailer like you didn't even know it was back there.

It's about time for engine oil change so we're going to swap out the fuel filter too.