Miliput to the rescue!
Lets try this again. I hit the gym, and late last night i got around to sanding the cursed part. The miliput actually worked out quite well and I didn’t have to do much sanding. I will have to remember to use the stuff on my next project since one of the two parts of the miliput has a nice layer of oxidation around it that needs to be cut away before mixing. When storing miliput, use some ziplog bags to reduce the oxidation and preserve the life of this rather expensive putty.