My 4R70W now drops out of gear pulling up to stop and won’t re-engage Drive unless I rev it with the shifter down in 1st. Once in gear it’s ok. What happened? I’m seeing a lot of forward clutch problems, any other possibilities? Never been into one of these.

Pictured in the middle of damn nowhere yesterday afternoon, shortly before it decided it had had enough.

I know the PO didn’t treat the trans well because i bought the truck with an ignored rear housing leak (just keep RTVing the shit out of the pan, that’ll fix it!), and with 145k (and, you know, Ford) I figure a rebuild is probably in order in any case