I think??? after removing the rear cover there's 10 nuts and washers
around the side/back. One is hiding up inside a cutout.
Then inside the cover is 3-4 screws. around the front of the adaptor plate.
One of the screws is hard to get to, I ended up using a swivel socket to get it out.
Then there's a couple of places you can pry the block off the adaptor plate.
They used a lot of silicone and it can be a B*&^% to separate

.