Good job on your vid Jed! I'm sure you know have a good feeling for the effort it takes to build a 9 minute movie, then load it up on Youtube ;-)
I think in time a complete rebuild would be good for this machine. New transmission fluid, o-rings, bearings, and a stem/boot seal will ensure this machine would last many more decades. But, until you are ready for that endeavor - check out the motor glide on this unit. I have a feeling that it could use a good cleaning, and new rollers and springs. Make sure you use the lube from Maytag on the glide. I never changed the belts - so I'm sure they are the originals too. I have a feeling this machine sat unused in the basement of the kind lady that I received it from for many years - thus the oil/fluid probably has churned into grease. In the next few weeks I will be scanning in the complete Maytag repair manual on .pdf - so you should be able to use that for reference.
Make sure to grab that injector set!
Ben