Update: I repaired my Omega Supreme!
The bicep pivot was stuck because of a factory defect. There was glue inside the area circled in red in the first pic. I tried cutting at the glue with various tools but the glue was deep in there and the thing wasn't budging. No matter how hard I tried both before and after disassembly I couldn't get it to turn. It didn't effect transformation, thankfully. It really only meant that he couldn't rotate at the bicep. So after months of trying, I decided to look online for solutions. Everything from nail polish remover, to vinegar, to other solvents, but they would also degrade the plastic of the figure. One solution was to simply soak it in water. So I tried that, had it soaking for three days. I tried turning it every once in a while with no luck. Today I gave up and just put him all back together. Decided to try the pivot one more time after he was assembled, and it turned! Success! I don't know why it had glue in there in the first place, like I said, must have been a factory defect because I got him new in the box when he was first released.




I'm a happy man~