After several calls I ended up at the Arlington International Dealer.  They scheduled the repairs Tuesday morning.  So later Monday I loaded the car into the trailer and walked back to camp.  The overflow parking for the trailer is about a 20-minute walk from the campsite.  Early Tuesday I broke camp, hitched up and arrived at the dealership in time to unload the car and park the trailer inside the fenced lot prior to 7:30. They promptly diagnosed and quoted the repairs.  Parts ordered work began during their 2^nd shift and continued Wednesday and part of Thursday.  Repairs and test drive completed, I started loading up the trailer around 3:30pm Thursday with new brakes.  Seems some of the rubber parts in the pumps and cylinders had broken down and contaminated everything causing the sticking.  Off I go into the Dallas rush hour in the rain.  Yippee.