Good news

One of the drives mysteriously started to work. I believe I may have gotten WD-40 on the heads and over time it may have evaporated.

The one that didn't look like the heads were touching: Turns out that the eject motor was hung up just right preventing the carriage from going all the way down. This drive is also fixed and the motor is functioning properly.

I think I have at least a couple other drives requiring help, so I'll have to look though and find them.

Thanks again for your help with this!