Since you are in there replace the clutches. I rebuilt a regular PG and that is de riguer. Also, you can empty the converter and try to clean it out as the sediment is also in it. Glad to see it running again!
Mine years ago would upshift at 12 mph, even if you manually shifted into low. One of the openings where one of the spools in the valve body was rough, sanded it a little bit and shifts like it should. Hope that makes sense.
I fear the transmission! Good job. I Im getting ready to dig into the Differential and manual trans for the same job and I have never done it before so guess I will film it from a newbie DIY point of view.. Cheers!
Oh friend. But why didn't you show the assembly of the multiple disks? And the assembly of the planetariums? I missed the opportunity to make a 3rd video, with mechanical details!