I bought the MM tool (above) and did it myself. I have a pretty good suspension shop near me which sets up race cars, and they do not do bump-steer.
I highly doubt you will find a shop willing to do it because it involves quite a bit to work as you need to cycle the suspension from it's rest state to about 1-2" or so of compression and rebound, which usually means pulling the springs out.
With coil-overs it's not too bad of a job to pull the springs, but the entire process is a bit of a PITA overall, however, the difference in how the car drives when you dial in bumpsteer to near-0 is very noticable. At least it was to me.