OP reporting back with results, summary first followed by details. After getting a couple of other quotes I remained with the Good Sam agency, keeping the RV with National General and switching the cars from National General to Progressive. The overall 23.3% increase was reduced to 7.2%. The Good Sam sales rep on the other end of the phone was great to work with and completely knowledgeable. He gets an easy "10" rating from me.
Details: The 23+% increase was just a general increase. Nothing about the coverage or drivers, including the single traffic violation, factored into it. The cars had the biggest increase, over 30%, while to motorhome increase was "only" 9.7%. The two other quotes I received were very close, price-wise, to the final solution with Good Sam, with the lowest being $41 per year less.
The insurance increases are hitting everywhere. In addition to the vehicle increase, our dental insurance had a 38% rate increase this year, and along with everybody else our medical rates have been skyrocketing.