billy1davis,
I did not read through the other replies, but here are my thoughts.
You mentioned that your rig has heavy duty front and rear stabilizer bars. Our rig has them as well. But I learned that having them does not necessarily mean they are doing their job. Stabilizer bars (heavy duty or standard) require tightening every 20,000 to 30,000 miles. Play from wear develops within the links and so they require tightening to once again respond properly.
The life expectancy of shock absorbers is another surprise for many RV owners. People are reporting that their shocks are lasting between 25,000 and 35,000 miles. That is also my own experience.
CLICK HERE to read about it. I included many pictures for clarity.
So make sure what you have is working properly.
One more point. A heavy duty steering stabilizer helps to limit excessive steering compensation.