Are you experiencing a rough ride? Mine's smooth. Much smoother than say my G35. I don't even feel speed bumps but a dip will be magnified more due to the size of the mada. I do however have good tires and stock ones stink. As for pulling the wheel, this is part of road feel. If you have too much mechanical support, you loose road feel and the steering feels vague. To little and you approach a heavy wheel. I like the mada's compromise. It is more of a driver's car reminding me of the feel of a high performance car like my G, vette, or a BMW than a Caddie.
So in conclusion, if you feel some bumps, but overall its smooth, its working. If you feel dips, potholes, this is normal. If the wheel feels a little heavier and translates more road feel, this is normal. If it is worse than this, you may have a problem.