[HumminNBoatin']

I would check your steering linkage. Odd's are if you have not yet replaced anything you are overdue. On your stabilizer to test it don't just draw it in and out. Do it with speed and force and see what happens. If you find that when you shove on it real hard and it has a more than a couple inches of travel before the resistance kicks in its worn and should be replaced.

I just got done going through this last month. I ended up doing just about everything. Upper and lower ball joints, pitman and Idler arm, and steering stabilizer.