A class A handles COMPLETELY different then pulling a fifth wheel. I went from a Class A to a fifth wheel and back to a Class A. My fifth wheel set up was a dream compared to my Class A's. If you reach to the right for a drink and it the coach goes to the right, that's you. Then you have to remember that while your fifth wheel was moving all around behind you, that doesn't transfer to the truck.
A class A is a giant wind sail going down the road and some minor corrections will be needed far more then a fifth wheel. It's normal because you have to get used to a different way of driving and water moving around and wind is felt far more then a fifth wheel.
Fifth wheel driving is MUCH better then driving most class A's. Those who only drive class A's and haven't made the transition, wouldn't understand.