Joakim, was this with the new shock rebuild, or before?
On the bump steer shaft... You have to have some way to adjust it, you can't just figure what the best height is and mill the steering arm to it. If you did that, then you're ride height would have to fixed also.
That's a tapered shaft that fits into the C5/C6 upright, it's used on every kind of production car without issues... Think about the load on that tiny shaft inside that tie rod...
