The center picture is pretty helpful. I did some zoom and crop so I could see it better. This doesn't look good Hr.
The areas above the graft that have a pale yellowish cast look translucent, and if you say they are soft this is pretty clearly some rot that has gotten into the base.
I don't think I would try to just remove the suspect areas. It's likely that there could be deeper spots forming that you cannot see.
If it was mine, I would remove the graft, and get a new clean cut so I could insure that there was nothing at the core. I would then trim the top of your graft stock to get the same kind of a clean cut, and quickly re-attach the graft to of course get vascular ring overlap. I would use the same proceedure as you did last time to secure the graft to the stock and let it fuse again.
After the graft is secured, I would champer cut the area around it on the stock at a downward angle, but not too steeply.
I think you would have a better result by doing the re-graft. The yote is well hydrated so it should bond pretty quickly.
Hope that helps.
Edited by Skywatcher, 16 September 2022 - 05:21 PM.