3 point removed, ready to rumble.
Looks like Hy-Tran was used. Lots of encapsulated contaminants. I can tell the gasket has never been off, maybe even the first time the trans cover has been off for that matter. It was like scraping oatmeal out.

I used a clean paint stir stick to muck it all out, so I wouldn't gouge up the metal surfaces.
Despite the initial horror upon opening the case, the fluid did its job and then some. The gears look like they've never seen a day's work and I didn't find one spec of metal.
I was going to cap off with a shot of nice cleaned cover reinstalled, but I somehow managed to order the wrong gasket.

I bought the one that goes further forward in the pump area. I am hoping the Cub dealer I plan on picking up some Hy-Tran from, will also have the gasket on hand.