That is a lot of play. Mine wasn't that bad but it was very noticeable at a standstill. The culprit in my case was a loose nut that fastens the yoke to the pinion - it's the nut seen at the top of the photo below (stolen from another thread). The yoke is what the rubber donut/isolator/coupling attaches to and will be seen when you remove the black plastic shroud at the very bottom of the lower steering column. I rebuilt my rack and then replaced the nut with a nyloc nut and some red loctite!
