steering problems

[deuchant420]

Hi all, 2005 X5 4.4
recently I have been noticing that while driving on the highway my X5 seems to be getting pushed and pulled by the hollows in the road. ie. when I change lanes and go across the uneveness between lanes my steering wheel gets pushed and or pulled making it difficult to control the vehicle at times. I had an alighnment within the last 6 months and I have checked the front end and nothing really seems worn or loose. It can be difficult to find worn parts even with the front end jacked up so I'm looking for suggestions or has anyone experienced this type of problem?
Thanks!