The Tailgater aims at western arc satellites. I'm guessing from your location that your home system also is aimed at the western arc satellites, too (119/110/129)
Make sure the Tailgater has a good clear view of the southwestern sky. Aim the handle on the unit roughly to the north. When it's connected to the 211K, you'll get a portable antenna screen that will ask your state, then will run three scans to find the satellites. You'll need to run that scan any time the Tailgater is moved at all.
Otherwise, no problems. It'll get all the programming you already have, it sees all three western arc sats. Only disclaimer is that it won't be able to find 129 in the extreme northeast US (Maine, etc).
(edit) Oh, one other thing. Some customers have seen their 211K go into a loop. It'll run the 535 screen (acquiring satellites), go to the 330 screen (downloading program guide), then reboot and go back to the 535/330 loop, and then rinse/repeat. If that happens, press SELECT on the remote when the 330 program guide download gets about halfway green on the progress bar. It's a known issue with a fix scheduled.