i've got an HDVR2 w/ 2 HDs in it. it's been my primary box for 4 years. i'm now getting the apparently common pixelation problem on tuner 2. Since the only way to get rid of it is to utilize the composite video output and not use the S-Video, i want ot instead use my bedroom R10 unit in my home theater. but i want to put the larger capacity drives from my HDVR2 into this R10. Is this a simple swap out (i do realize i need a 2 drive bracket for the r10 since the layout is different inside)?