Bumpsteer w/Bagged Suburban

[LooseCannon]

Here's the situation... I recently bagged my burb (see signature) and am experiencing what I think is bump steer. Basically, the front tires wonder the road and the steering wheel moves when hitting washboard or hard bumps like a man hole cover, etc... Both movements are minimal and more of a nuisance than anything.



@ ride height, which is about 4 1/2" drop


According to this article my suspension is not correct.

1. The red line should intersect the upper and lower ball joints and outer tie rod - IT DOESN'T.

1. The blue line should intersect the upper and lower pivot points and inner tie rod - IT DOESN'T.

1. The yellow lines should intersect to create instant center - IT DOESN'T.

Questions, based on the info do you think the handling problems are due to bumpsteer? Is there anything else that could cause the problems?

The rig has less than 30k miles and I replaced the ball joints and outer tie rods when swapping the spindles (because I ripped the boots) so the front end is tight. I also had it aligned but it pulls to the right. I can give the alignment numbers if it would help.

Thanks!!