Hi, I downloaded instacake for a RCA DVR40.  I took a 120 western digital HD out of a RCA DVR120, did the bake, everything is up and running, seems to be good.   When I check system info, it say my unit is a DSR 7000/17.  Is this normal, and will I have Problems with DTV or tivo?  The first night I had some signal breakup, the next day my locals came in and it seems to be fine.  I was a little woried about the Western digital drive, I read somewhere there not the best drive to use.  Your thoughts would be greatly appreciated.