Well, thanks to another forum member I was able to purchase an X/ProFile and add it to my Lisa 2/10. Short story:
It's fantastic. While I would have liked to get the original Widget working properly, and tried to for weeks, that is unfortunately beyond my hardware (oscilloscope) and skillset at this time. It's something I do plan to continue as a long-term effort, however. I think dialing in the pots to their correct values may still yield a working drive.
But the X/ProFile is
also silent and, after listening to the noisy Widget bearings for 80+ hours I was ready for something quieter (so was my wife). Simple to install and easy to swap out the compact flash cards to try different operating systems (Lisa Office System, MacWorks, Xenix, etc.). The activity LED even lines up with the Lisa's front cover perfectly to reflect disk access. Happy that these are available for these wonderful old machines.