On the front bearing- it's been a while but as I recall I was able to shimmy it similar to how it's described and illustrated in this PDF download hosted over on the Corvette Forum.
https://www.corvetteforum.com/forums...-fisher-sm.pdf
On the reverse gear and washers-I'm no expert but at least in the photos that looks pretty bad. I recall those surfaces being smooth as ice. Glad to hear Paul replied to your question on the video. I sent him a question or two through his site before I bought the rebuild kit and he responded and was very responsive and helpful them too. That may be worth a try.
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'09 Magnetic Gray Metallic G8 GT
'79 T/A
Solar Gold Metallic W72/WS6
'71 GT-37
