TiVo update: Went over to Bob's house when I got my new drive. After only a few minutes plugging and unplugging IDE hard drives in to his computer, my Series 2 is now looking good with 140 hours of storage. Of course I only ever record on "Best" quality, but at 35+ hours, this is just fine.
I used the 9th Tee bracket, and did not upgrade the cooling or get the power-up delay kit that are available. The Hinsdale HowTo says you don't need them, and I trust him.