All - many thanks for tips and suggestions. I noticed a few questions too, so I'll address them here quickly.
1) Yes, the dolly itself tracks my RV perfectly. The car's front wheels are perfectly centered and straight on the dolly. The car's rear end veers to the right - almost as if following the slight grade on most US roads. The car does NOT wag.
2) The car was loaded and reloaded a number of times exactly in accordance with the Demco Owner's Manual.
3) The Kar Kaddy dolly steering pin WAS pulled to allow the trailer to steer, which it seems to do with no problems - with or without a car.
Never dawned on me that the rear suspension may need aligned, so I will have that checked. At first thought however, I occasionally follow my wife when she drives that car and it always seems to track perfectly straight. I always immediately notice cars in which the rear end seems to veer to one side or the other - usually indicating that it was not properly aligned after a wreck or constantly goes over rough roads. Knock on wood, this car has never been wrecked.
I will try some of the strap and rope techniques some of you offered. My only concern is cinching the strap to the brake pedal too tightly causing the steering wheel to deform.
Give me a couple days and I'll report the good or bad.......
Thank you all......
