I tried to assemble it last night, but I couldn't find one of the black vernier parts for the round shoulder part (╯°□°)╯︵┻━┻
I had no choice but to check Bandai Namco to buy some parts, but they were almost out of stock for the Sieg Axe (┛◉Д◉)┛彡┻━┻
I decided to try replicating parts like the greats I've seen online.
Molded male and female molds
You can see the shape of the parts in the clear clay.

Today's progress ~ Sieg Axe @ I tried duplicating parts | JB☆⑧'s Gunpla works