I recently became a dtv customer this week...I purchased an am-21 to pair with my hr-34...it was all hooked up tuesday eve...I scanned and added all the extra ota channels...then on Wed am, an update came through to add the new UI and guide to all 4 of my boxes...all my hr-24's (3x) got the new...

I currently use MRV and have a SWIM 16. I am utilizing 15 tuners (6 DVR and 3 regular tuners). I am anticipating adding more locations, but wonder what happens when you go over 16 tuners. Can they add another SWIM module or do you need to add an additional dish?