I have a lifetime Series 3 (TCD652160) that I want to possibly upgrade its hard drive for more storage. I have upgraded another Series 3 in the past so am familiar with how its done. I have an image for this model, a PC and will use WinMFS as before. I might be able to get a hold of some WD DVR expanders for pretty cheap. 1TB and 500GB models specifically. Can these simply be cracked open and their hard drives pulled to then be used as the upgrades in this TiVO?