Just a follow-up on my first time washer repair.
I went and picked up a spanner wrench - which I may only use once.
Before using the wrench, took the basket out to check out the new noise. With the loose nut, the "plastic" basket was a little worn from rubbing the plastic tub.
Lucky that the new Trans. shaft and tub hub not chewed up. All bungies intact.
Washer back in service, for how long
Thanks for everyone's replies.