Got a 2006 XB the steering wheel starts to shake at 80mph and then gradually stops. Anyone have this issue?

This probably isn't a big issue, but it did get me wondering. I swapped out my 2004 xB steering wheel yesterday, going from the stock plastic unit to the Scion leather option, all went well and I added to the DIY steering wheel swap thread already -->...

Took about 10min. to install. 1st pic. - stock wheel. Make sure you wheels are straight and battery is disconnected. 2nd pic. - using two pieces of tape, mark alignment marks, so that you will reinstall the new wheel in the same spot. 3rd pic. - using a T30 torx, loosen up this bolt on...