91 Loyale Auto Won't Shift

[AKLandcruiser]

I won a 91 Loyale this weekend in a bet and for good reason I suppose, the transmission won't shift on it's own. In D the transmission is stuck in 1st gear and it will go into 2nd if shifted down to 2nd. After some research I believe it's because the governor is sticking. There used to be an article on this site detailing the process of cleaning the governor but short of a broken link the article eludes me. Does someone still have a copy by chance? Ultimately I'd like replace the auto with the 5spd manual gearbox but for now I'll be happy to get the auto shifting.