It happens.
A couple of questions:
- in the Options settings for the wheel, which difficulty level do you have it set to (I think it's Beginner, Amateur and Professional). I've always had mine set to Professional - it had intrigued what the other settings are like
- where are you having problems? The most common problem I see, especially with the full spec race cars, is under braking - you really have to learn to brake in a straight line, which whilst simple with the DSII is actually quite difficult with the wheel, because you can get sucked into turning just a fraction without realising it - and at full on-the-limit braking from 340kmh, it doesn't take much to upset the car.
Are you appreciating the better throttle control?