You guys are cruising right along! Hopefully you got some rain last night. it missed us but we have good moisture yet.
Looks like it must have been something like the park sensor. I agree too much electronics these days to go wrong, I miss the linkage days, when it wouldn't go into park there was likely a pin missing...
My grandparents bought this new in 1945 and it replaced horses, was their main tractor for decades. The B was kept in the family and my aunt gave it to me in 2020, so I rebuilt it and got it running again that winter. Fun project and very easy to work on, although I have more money into than it's worth... Wish my dad was still around to see it, he would have gotten a kick out of it.