Finally found where i'd seen this... (for those looking to do this)Here is what that top VB seal looks like.
Once you remove the VB
there are two seals that are advised to inspect and clean.
the small one i believe is p/n LC3Z7N265B (fitment says 2020-2026 F250/350/etc)
the instructions go on to say to coat them with petroleum jelly to hold them in place.
Grease doesnt work.
Maybe PJ will?One other thing is to make sure that the small gasket that goes between the VB and the bottom of the transmission is seated correctly. It's a bear getting it oriented correctly. Grease wouldn't hold it up while placing the VB up in the transmission. .....
I found you can use a long, thin standard screwdriver to move it in place after you get the VB started with a few bolts to hold it up there.

