Yes, pins were installed correctly. There was no problem with the drive's function in the unit. It formatted, I recorded a show and could navigiate the directory tree. I could access the data for playback on the 722. The 722's FW driver just didn't work with it.
You're using an 80G right? So that should indicate that capacity is not a problem. I am running a 4200rpm drive. I can not think of any reason why that should be an issue.