Paul, I am not sure if your Tornado would be the same as my GTD but the GTD looks similar as far as the steering rack mounting is concerned. In my case shiming the rack upwards 7/16" improves bump steer quite a bit. As you can see this is easly done at your stage of the build. You will have to do your own research for yor car type but if a simple shimming is required now would be the time seeing that the mounting brackets for the steering rack are now fully exposed.
You can get a very good write up on bump steer in several books including Chassis Engineering by Herb Adams, Tune to win by Carrol Smith, and Competition Car Suspension by Allan Staniforth.