Installed my QRack. It took a most of the day because I had to reinstall my front brakes, sway bar etc. Even with "eyeball zero toe" it feels pretty good. It shuttered at slow speed for the first run. Then I let it cool while I set all my tire air pressure. On the second run (including parking lots and parking in and out of spots) I only notice some shudder in reverse but it wasn't audible and wasn't violent. I'm going to guess residual air on the system.
What I *did* notice is that it is much stiffer (which is welcome) and has a ***** load of bump steer now, which I'm going to attribute to the whiteline bushings more than the rack itself. It is very stiff now and there is zero play on center so no more SUV effect. I'll have to get used to the bump steer. No biggie. Everything is being transmitted up the steering column now ha ha.
Hope that helps.