The finding satellite has nothing to do with the Tivo. I had the same problem when I first got a 322. It turned out to be a bad connector crimp on the coax cable.
You shouldn't be having a phone line contention issue either because the 322 normally only calls out once a month, except for pay per view, billing calls.
When I hooked up my Tivo and programmed it to control the 322 using the IR blaster, I found how to keep the set up reliable, through trial and error.
1. Make absolutely sure that the Tivo is set to show only the channels you can receive on the 322. If you don't do this, the Tivo may try to change to a channel you do not receive. If this happens, the Tivo cannot produce the IR responses necessary to get to a channel that you can receive.
2. Enable program guide updates on the 322. Schedule them for a time that there are few or no programs that you want the Tivo to record. You need about an hour per day.
3. Set up a manual timer on the 322 to automatically tune to a station that you receive about an hour after the time set up in #2 above. Others have suggested that the time be set to 1 minute before the hour so that the Tivo can tune to a station on the hour.