I replaced my worn out rack and pinion today which fixed 80% of my wobbly and non accurate steering wheel but theres another problem, when ever I drive over a bump at speeds over 40mph the car tends to get loose by way of listing right and left until I counter steer, At speeds with no bumps it flys as straight as an arrow but once a bump comes along it feels like the car doesnt want to keep going straight?? Could it be worn out stabilizer bar links or something loose in the suspension? I know my ball joint isnts too good, could it be the ball joint? Any help would be great, thanks